136 MR. o. THOMAS ON THK [Feb. 20, 



mere vaguely defined blotches, comparatively far apart from each 

 other. These differences were well seen on a comparison of the 

 figure given by Harris of the Southern Giraffe ^ with those given 

 by EiippelP and Brehm ' of the Northern one. 



Prof. Sundevall had already noticed the difference in the general 

 colour of the two animals, and had given to the Northern form 

 the varietal name of Camelopardalis (firaffa, var. athiopica ^. 



A commuuication was read from Dr. E. W. Shufeldt, C.M.Z.S., 

 giving particulars of the methods used in preparing certain Inver- 

 tebrates, which were adopted by the experts at the U.S. National 

 Museum, in the case of specimens sent to Chicago for exhibition 

 at the World's Columbian Exposition. This communication was 

 illustrated by photographs of the objects in question. After the 

 preparation of finished moulds of these objects, gelatine casts were 

 made from the moulds, the gelatine being made of the following 

 composition : — 



Best Irish Grlue 4 oz. 



Gelatine (photographers') .... 2 „ 

 Glvceriue 4 ,, 



Boiled Linseed-oil , 



The gelatine casts were then coloured to resemble the objects 

 in life. 



The following papers were read : — 



I. On the Mammals of Nyasaland : third Contribution. 

 By Oldfield Thomas, F.Z.S. 



[Eeceived February 13, 1894.] 



The present paper contains an account of the third and fourth 

 collections of Mammals made and presented to the National 

 Museum by Mr. H. H. Johnston, C.B., Consul-General for British 

 Central Africa, with the help of his able assistant, Mr. Alexander 

 Whyte, F.Z.S. Papers on the two previous collections have already 

 been published*. 



The series now described bears out the prophecy I ventured to 

 make in 1892, that as Mr. Whyte's knowledge "of the locahty 

 increased he would be able to obtain the rarer and more local 

 species, and that among these there would certainly be some 



' 'Wild Animals of S. Africa,' pi. xi. (1840). 



' Atlas Eeise N. Afr. pi. viii. (1826). 



' ' Thierleben,' iii. p. 188 (1830). 



* " Pecora," K. Vet.-Ak. Handl. 1844, p. 175. 



' P. Z. S. 1892, p. 546 ; and 1893, p. 500. 



