55 



Head of adult male, 25 years old. 



Head of elderly female, insane. 



Head of man, 75 years old. 



Head of man, 106 years old. (Born 3 1st January 1783, died 



18th April 1889.) 

 Head of chimpanzee. 

 Head of orang-outan. 

 Head of chacma baboon. 



244. Wax models of the brains of vertebrates, pre- 

 pared at the Anatomical Institute of the Freiburg 

 University under the direction of Prof. R. Wiedersheim. 



E. 163. 1888. Made by Dr. A. Ziegler, Freiburg-i.-B. 



Ammocoetes branchialis. Alligator mississipiensis. 



Scyllium canicula. Columba domestica. 



Salmo fario. Lepus cuniculus. 



Rana esculenta. Canis farniliaris. 



245. Models of the limbs of the male orang-outan (six 

 years old). 



E. 21. 1890. Made by L. Gasciani $ Son. 



a. Upper limbs. In one limb the hand is open, in the other 

 it is represented grasping a piece of wood. 



b. Lower limbs, in one piece. 



246. Casts in fusible metal of the internal ears of the 

 following species of Cetacea, to show the form and dis- 

 position of the semicircular canals. 



Made and lent by Prof. Crum Brown. 1876. 



Narwhal (Monodon monoceras). 

 Orcella fluminalis. 

 Orcella brevirostris. 

 Globiocephalus. 

 Platanista gangetica. 



247. Set of wax models to illustrate the development 

 of the trout (Salmo fario). 



Made by Dr. A. Ziegler, Freiburg-i.-B. 

 E. 249 to 251. 1877. 



There are 21 preparations, seven representing sections, 

 which depict the principal phenomena in the early stages of 

 the development of the common trout. The models are all made 

 to a uniformly enlarged scale of 30 diameters ; most of them 

 can be seen by transmitted as well as by reflected light. 



