395 



und Filz sichtbar sind. Bei gewöhnlicher Zimmerwärme läßt man 

 trocknen. Ist die Filzpiatte vollständig ausgetrocknet, so löst sie sich 

 vom Glase ab. Sie wird mit dünner Collodiumlösung überzogen, nach- 

 dem diese getrocknet ist, in kochendes Wasser geworfen und durch 

 Beschweren unter der Oberfläche gehalten. Das Eiweiß bekommt eine 

 vollständig lederartige Consistenz. War die Platte nach dem Ablösen 

 vom Glase nicht glatt genug, so bestreicht man sie beiderseits mit 

 dickflüssiger gefärbter Eiweißmasse, läßt diese trocknen, und überzieht 

 mit dünnflüssigem Collodium, um dann zu kochen. Die schwarzen mit 

 Ruß gefärbten Platten werden meistens nur brauchbar, wenn sie nach 

 dieser Methode hergestellt werden, indem sie bei der ersteren mehr 

 oder wenisrer fleckig ausfallen. 



■^o^ 



2. Zoological Society of London. 



23'^'^ June, 1887. — Mr. Sclater exhibited the skin of a White-nosed 

 Monkey of the genus Cercopitheciis^ lately living in the Society's Gardens, 

 which appeared to be the C. ascanias of Schlegel. It had been obtained by 

 the Rev. W. C. Willoughby from the west shore of Lake Tanganyika, East 

 Africa. — Mr, Sclater also exhibited and made remarks on a specimen of 

 the Pheasant from Northern Afghanistan lately described by him as P/iasia- 

 mis principalis. — An extract was read from a letter addressed to the Secre- 

 tary by Mr. A. H. Everett, C.M.Z.S., of Labuan, reporting the return of 

 Mr. John Whitehead from his expedition to Kina-Balu Mountain in Northern 

 Borneo, with specimens of some fine new Birds, Mammals, and other objects 

 of natural history. — Dr. Günther, F.R.S., exhibited and made remarks 

 on a hybrid Pheasant, between a male Golden Pheasant [Thaumalea pietà) and 

 a female Reeves's Pheasant [Phasiamis Reevesi). Dr. Günther also exhibited 

 a living hybrid Pigeon, produced by a male white Fantail Pigeon and a female 

 Collared Dove [Turtur risorius) . — Dr. Günther, F.E.S., read a report on 

 the zoological collections made by Capt. Maclear and the other Officers of 

 H.M.S. , Flying Fish' during a short visit to Christmas Island. This island 

 is situated in the middle of the Indian Ocean, south of Java, and had never 

 been before visited by naturalists. The collection, which had been worked 

 out by the staff of the British Museum, consisted of ninety-five specimens, 

 amongst which were examples of two Mammals, two Birds, two Reptiles, 

 two Mollusks, two Coleoptera, two Lepidoptera, and a sponge new to science, 

 — Mr. F. E. Beddard, F.Z.S., read a paper on Myrmecohius fasciatus, in 

 which he described a remarkable glandular structure stretched across the 

 anterior region of the thorax of this Marsupial. — Prof. F, Jeffrey Bell, 

 F.Z.S., read the sixth of a series of studies on the Holothuridea. The present 

 paper contained descriptions of several new species belonging to the genera 

 Cucumaria^ Bohadschia, and Holot/mria. — Mr. A.Smith-Woodward, 

 F.Z.S., read a paper on the fossil teleostean genus Rhacolepis. The author 

 gave a detailed description of this Brazilian fossil fish, which had been named 

 and briefly noticed by Agassiz. Three species were defined, and the author 

 showed that the genus had hitherto been erroneously associated with the 



