1,722,280 research outputs found
Pseudomys desertor Troughton 1932
No full textPseudomys (Gyomys) desertor Troughton, 1932c Rec. Aust. Mus. 18(6): 293. (20 April 1932). Common name. Desert Mouse. Current name. Pseudomys desertor Troughton, 1932c; following Jackson & Groves (2015). Holotype. M.1306 by original designation. Skin mount, incomplete skull, indeterminate sex, originally entered in M Register as “ Mus nanus Gould, Central Australia ”. Presented by Professor Baldwin Spencer, registered on 15 July 1896. Sex, collector and collection date not indicated in register. Condition. Cranium missing both zygomatic arches, missing basioccipital, left upper tooth row is detached; both dentaries missing angular processes. Skin mount: bald patch on the dorsal surface, tail tip fractured. Type locality. Given as “Central Australia ” (= Northern Territory, Australia) by Troughton (1932c) and Mahoney & Richardson (1988). Paratype. M.1307 by original designation. Sex not recorded, skin mount, skull in situ, same Register details as holotype. Comments. Troughton based his description on two skin mounts that were part of the series originally identified by Waite (1898a) as Mus nanus Gould, 1858. Troughton gave the registration numbers of the holotype and paratype but was unable to match either specimen to Waite’s original specimens. Although Waite (1898a) stated that he had five specimens, he designated only four, as specimens A to D from Wycliffe Creek, Barrow Creek and Alice Springs, NT. Tate (1951b) compared measurements given by Troughton and Waite and concluded that the holotype was Waite’s male specimen “B”, from Wycliffe Creek. However, the three external measurements provided by Troughton would seem to be applicable to several of Waite’s specimens, casting doubt on Tate’s determination of the type locality as Wycliffe Creek.Published as part of Parnaby, Harry E., Ingleby, Sandy & Divljan, Anja, 2017, Type Specimens of Non-fossil Mammals in the Australian Museum, Sydney, pp. 277-420 in Records of the Australian Museum 69 (5) on page 369, DOI: 10.3853/j.2201-4349.69.2017.1653, http://zenodo.org/record/523780
Rattus owiensis Troughton 1945
No full textRattus owiensis Troughton, 1945 Rec. Aust. Mus. 21(6): 374. (25 June 1945). Common name. Yapen Island Rat. Current name. Rattus jobiensis Rümmler, 1935; following Taylor et al. (1982) and Musser & Carleton (2005). Holotype. M.6993 by original designation. Male, subadult, [collector’s No. Owi Is. 30], skull, study skin, presented by Lt. Col. C. B. Philip and Major G. M. Kohls in August 1944, registered September 1944. Condition. Incomplete and damaged cranium; braincase fragmented, missing left auditory capsule, hole in right auditory bulla (which is detached), missing jugal bone of both zygomatic arches; both dentaries complete. Study skin: bald patch on throat, three bald patches on ventral abdominal area; otherwise in good condition. Type locality. Owi Island, Schouten Island Group, Cenderawasih (formerly Geelvink) Bay, Papua Province, Indonesia. Paratypes. (3, 2 by subsequent determination; species composite). Same data as holotype: M.6992 by original designation, female (allotype), subadult, skull, study skin (= R. jobiensis); M.6994, male, skull, study skin (= R. exulans browni); marked by Troughton as paratype in register and given as owiensis; M.6995, male, body in alc., (= Rattus exulans browni), marked in the register as owiensis by Troughton though not marked as a paratype, but marked “ paratype ” by Troughton on the specimen index card. Comments. The number of specimens in the type series is not indicated by Troughton, who cites registration numbers for the holotype and allotype only. The holotype is a male, although Troughton variously refers to it as male and female in the original account. Taylor et al. (1982) note that the type series is a composite of two species. They assigned the male holotype, and paratype female M.6992, both of which they state are subadult, to R. jobiensis, and the paratypes M.6994 and M.6996 to Rattus exulans browni. However these authors do not mention M.6995, the only spirit specimen, which is also Rattus exulans browni. We have not included M.6996 (which is not indicated as a paratype by Troughton) in the type series because of the uncertain identity expressed by Troughton, who marked it in the register as “ R. browni (owiensis juv?)”.Published as part of Parnaby, Harry E., Ingleby, Sandy & Divljan, Anja, 2017, Type Specimens of Non-fossil Mammals in the Australian Museum, Sydney, pp. 277-420 in Records of the Australian Museum 69 (5) on page 377, DOI: 10.3853/j.2201-4349.69.2017.1653, http://zenodo.org/record/523780
Sminthopsis granulipes Troughton 1932
No full textSminthopsis granulipes Troughton, 1932a Rec. Aust. Mus. 18(6): 350, fig. 1. (20 April 1932). Common name. White-tailed Dunnart. Current name. Sminthopsis granulipes Troughton, 1932a; following Jackson & Groves (2015). Holotype. PA.669 by original designation. Adult female, skull, body in alc., tongue and palate in alc., entered in register in c. 1878. See above account of Podabrus albocaudatus Krefft for details of P Register entries against this specimen. Condition. Cranium missing occipital area, fractured left parietal bone and temporal bone; hole in ramus of left dentary, right dentary complete. Parts of dried brain are still in the skull. Body in alc.: dorsal fur slip mid back and adjoining flank. Type locality. “King George’s Sound, south Western Australia ” (Troughton, 1932a). It is possible that the holotype was not collected in the immediate vicinity of King George Sound, but from an undetermined adjoining region, presumably inland (Parnaby et al., 2015). Comments. Description based on the holotype only. Troughton’s granulipes is based on a specimen that we believe to be the holotype of Podabrus albocaudatus Krefft, 1872c. Troughton’s name is therefore a junior objective synonym and it was designated a nomen protectum by Parnaby et al. (2015). In his original account Troughton noted the following entry in the Palmer Register: “In the handwriting of the original entry is written a specific name which indicated that it was regarded as new …”. This entry includes the name Podabrus albocaudatus (see account for that taxon above) which was validly published by Krefft (1872c). Troughton was probably not aware of the newspaper account of Krefft (1872c) or if he was, might not have considered it to be validly published.Published as part of Parnaby, Harry E., Ingleby, Sandy & Divljan, Anja, 2017, Type Specimens of Non-fossil Mammals in the Australian Museum, Sydney, pp. 277-420 in Records of the Australian Museum 69 (5) on page 311, DOI: 10.3853/j.2201-4349.69.2017.1653, http://zenodo.org/record/523780
Máquina de dividir círculos
No full textLa fecha de producción se ha tomado de fuentes directas existentes en el Archivo del Observatorio de San Fernando.La máquina de dividir o graduar círculos (dividing engine) fue desarrollada en los últimos años del siglo XVIII por el conocido constructor inglés de instrumentos J. Ramsden (1776), dada la necesidad de efectuar graduaciones de precisión en los círculos o sectores de círculos de determinados instrumentos astronómicos. John Troughton (1739-1807) construyó más tarde una de estas máquinas para su taller, basándose en la Ramsden. Poco después, su hermano Edward Troughton construyó una nueva máquina que permitía mayor rapidez en los trabajos de división. La máquina de dividir círculos, actualmente en proceso de restauración en el taller del Real Observatorio de la Armada, fue constuida por Troughton & Simms en 1859 y sigue la tradición de las citadas anteriormente.Transcripción: "Troughton & Simms, London 1859
Melomys hageni Troughton 1937
No full textMelomys hageni Troughton, 1937a Rec. Aust. Mus. 20(2): 124. (27 August 1937). Common name. Black-tailed Mosaic-tailed rat. Current name. Melomys rufescens hageni Troughton, 1937a; following Musser & Carleton (2005). Holotype. M.6113 by original designation. Adult male, skull (Fig. 38), study skin, collected and presented by Dr G. A. M. Heydon during 1936. Registered on 22 May 1936. Condition. Cranium has holes in left temporal bone, right parietal and frontal; left dentary missing ramus, right dentary missing angular process. Study skin missing left ear and tail tip is fractured. Type locality. The upper Wahgi River valley, alt. 5–6,000 ft., near Mt Hagen, Western Highlands Province, Papua New Guinea (Troughton, 1937a). Comments. Apparently described from one specimen.Published as part of Parnaby, Harry E., Ingleby, Sandy & Divljan, Anja, 2017, Type Specimens of Non-fossil Mammals in the Australian Museum, Sydney, pp. 277-420 in Records of the Australian Museum 69 (5) on page 360, DOI: 10.3853/j.2201-4349.69.2017.1653, http://zenodo.org/record/523780
Pteropus sanctacrucis Troughton 1930
No full textPteropus sanctacrucis Troughton, 1930 Rec. Aust. Mus. 18(1): 3. (10 November 1930). Common name. Temotu Flying-fox. Current name. Pteropus nitendiensis Sanborn, 1930; following Simmons (2005). Holotype. M.4763 by original designation. Male, Field no. 65, skull, study skin, collected on 27 July 1926, by E. Le G. Troughton and A. A. Livingstone. Registered October 1929. Condition. Cranium and dentaries complete. Study skin with bald patch on the ventral surface and a distal membrane tear between digits 3 and 4. Type locality. [Carlisyle Bay], Santa Cruz Island, Santa Cruz Group, Timotu Province, Solomon Islands. Paratypes. (6, 5 by subsequent determination). All six specimens were collected by E. Le G. Troughton and A. A. Livingstone: M.4761 by original designation, female (allotype), skull, study skin, collected 18 July 1926, Trevanian Island, off Santa Cruz Island. M. 4762, male, body in alc.; M.4764 – 65, both males, bodies in alc.; M.4766, female, body in alc., all four have same locality and collecting date as holotype. M.4767, female, body in alc., south coast of Santa Cruz Island, collected 29 July 1926. Comments. Troughton states that he examined seven specimens from Santa Cruz Island, but did not cite registration numbers except for the holotype and allotype. There are only five additional specimens in the M Register with matching collection dates and localities, which are assumed to be the remaining five specimens examined by Troughton; we treat these as paratypes, although none are labelled as such.Published as part of Parnaby, Harry E., Ingleby, Sandy & Divljan, Anja, 2017, Type Specimens of Non-fossil Mammals in the Australian Museum, Sydney, pp. 277-420 in Records of the Australian Museum 69 (5) on page 388, DOI: 10.3853/j.2201-4349.69.2017.1653, http://zenodo.org/record/523780
Pseudomys botami Troughton 1932
No full textPseudomys botami Troughton, 1932. Rec. Aust. Mus., 18:292. TYPE LOCALITY: Australia, South Australia, Ooldea. DISTRIBUTION: Australia, S South Australia and S Western Australia (see map in Kitchener, 1985:216). COMMENTS: Originally described by Troughton (1932a) as a subspecies of P. hermannsburgensis , but distinguished from that species and redescribed by Kitchener et al. (1984a), who also reported sympatry of both species at Goongarrie, Western Australia.Published as part of Guy G. Musser & Michael D. Carleton, 1993, Order Rodentia - Family Muridae, pp. 501-755 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 645, DOI: 10.5281/zenodo.735309
Dendrolagus deltae Troughton & Le Souef 1936
No full textDendrolagus deltae Troughton & Le Souef, 1936a Aust. Zool. 8(3): 195. (29 June 1936). Common name. Huon Tree-kangaroo. Current name. Dendrolagus matschiei Förster & Rothschild, 1907; following Groves (2005d). Holotype. M.5418 by original designation. Male, skull, study skin, no locality data entered in M Register, presented by Taronga Zoo Trust, registered 4 December 1933. Condition. Cranium missing both upper canines, the deformed third upper left incisor has overgrown the socket of the missing 2nd upper incisor; cranium in good condition. Both dentaries complete. Whole study skin complete and in good condition. Deformed and overgrown nail of digit 5 of right pes. Type locality. “Region of Mt Pratt, in the north-eastern area of the Delta Division of Papua” (Troughton & Le Souef, 1936a: 195). Locality data considered erroneous by Kirsch & Calaby (1977). Groves (1982) also rejected Mt Pratt as the origin of the type material, which he believed came from the Huon Peninsula. Helgen et al. (2011: 250) discussed this entity at length and concluded that Mt Pratt could be an eastern outlier of Mt Bosavi, Southern Highlands Province, PNG. Paratype. M.5420 by original designation. Female subadult, skull, flat skin, “New Guinea ” (M Register), registered 3 January 1934, presented by Taronga Zoo Trust, Sydney. Comments. Description based on two specimens. The collection date and collectors of these specimens were unknown to Troughton and Le Souef, who stated that “both specimens were from the region of Mt Pratt, in the northeastern area of the Delta Division of Papua ” and were obtained “doubtless through the co-operation of Papuan authorities”. Troughton regarded deltae to be a doubtful species based on erroneous locality data provided by Le Souef for zoo animals, as indicated by his handwritten comments on a copy of the published paper, as reported by Kirsch & Calaby (1977). The AM Mammal section library has a reprint of Troughton & Le Souef (1936a) on which Troughton has used a type writer to add a footnote on the first page: “Note: Dendrolagus spadix is recognized as valid, but D. deltae remains uncertain owing to the doubtful locality provided for Zoo specimens by co-author Le Souef. The marked interorbital inflation indicates that deltae may be a race of goodfellowi, pending examination of an overall series of that species. E.Le.G.T.”.Published as part of Parnaby, Harry E., Ingleby, Sandy & Divljan, Anja, 2017, Type Specimens of Non-fossil Mammals in the Australian Museum, Sydney, pp. 277-420 in Records of the Australian Museum 69 (5) on page 331, DOI: 10.3853/j.2201-4349.69.2017.1653, http://zenodo.org/record/523780
Brúixola pantòmetre - Troughton & Simms
No full textMaterials: metalls, vidre.Lloc de creació: LondresTroughton & Simms és una coneguda firma britànica d'instruments científics, que operava des del segle XVIII fins a mitjan segle XX. El teu aparell probablement es data entre la segona meitat del segle XIX i principis del segle XX, ja que Troughton & Simms va ser una de les principals empreses en la fabricació d'instruments de mesura durant aquest període.
Era utilitzat per topògrafs per a crear mapes, calcular distàncies i angles en terrenys grans, i en general, per a fer estudis geodèsics i de parcel·lació.
Aquest tipus d'instruments va ser gradualment substituït per teodolits més avançats i altres eines modernes de mesura, però representen una etapa fonamental en l'evolució dels instruments topogràfics.
L'aparell que mostres a les fotografies sembla ser efectivament una brúixola-pantòmetre amb telescopi, un instrument de topografia utilitzat per a mesurar angles horitzontals i verticals. Aquest tipus d'instruments s'empraven per treballs de camp com la cartografia i la geodèsia, i poden integrar una brúixola per a la referència del nord magnètic, juntament amb un telescopi per a l'observació precisa.
Descripció detallada:
1. Brúixola: A la base de l'aparell es veu clarament una brúixola magnètica, amb indicadors dels punts cardinals (N, S, E, O). Aquest tipus de brúixola s'utilitzava per alinear l'aparell amb el nord magnètic, un pas fonamental en el procés de mesura d'angles horitzontals.
2. Pantòmetre i Cercle Graduat: L'estructura cilíndrica sota el telescopi presenta una roda graduada que permet mesurar angles horitzontals visant per diferents finestres estretes perforades en el cilindre. Els pantòmetres tenien una funció semblant als teodolits moderns, però amb un disseny més primitiu, indicant angles horitzontals utilitzant la brúixola com a referència.
3. Telescopi: Situat a la part superior s'utilitzava per a fer observacions llunyanes i ajudar en la mesura precisa dels angles. Aquesta part es podia ajustar en elevació i es va utilitzar en combinació amb la brúixola per determinar direccions i distàncies.
4. Cargols d'Ajustament: A la base i en altres punts de l'aparell, es poden veure cargols que s'utilitzen per a ajustar l'instrument, ja sigui per estabilitzar-lo sobre el terreny o per ajustar la precisió de les lectures
- …
