SOUTHEAST PAVILION 



1n\ i;i{I HIUIATKS 



At ihv v\\vvn\v vaM is Dunvin Hall, di'votcd cliicHy to the inverte- 

 brate animals (thoscMvliicli do not i)oss('ss a backbone). Faein^:; the 

 entrance is a bronz(> i)iist of Darwin l)y Win. ( 'ouper presented l)y tlie 

 New York Academy ol" Sciences on the occasion of 



Synoptic ^j^^^ i:>arwin centenary in 1909. Passing around the hall 



Scries * 



from left to ri«>;ht, tlu^ progression is from the lowest forms 



of animal life, the one-celled Protozoa, to the hi<2;hest and most com- 

 plex forms of animal life, the Primates, including man. The distinctive 

 characteristics of each group are fully described on the alcove and case 

 labels. i\Iany of the minute forms are represented by skilfully prepared 

 models in glass and wax showing the animal many times enlarged. Thus 

 the visitor may obtain an idea of the form and structure of these animals 

 which in spite of their small size have in so many instances such a 

 vital influence on the life of man. 



This alcove contains the lowest forms of animal life. All are single- 

 celled individuals. The simplest kinds are abundant in swamps and 

 stagnant w^ater, others are found in myriadsjn the sea w^hile the ocean 

 bottom 



Alcove 1 

 Protozoa 



m many 

 localities 

 is covered with 

 them. The speci- 

 mens exhibited in 

 this alcove are 

 models, some of 

 wiiich are enlarged 

 more than a thou- 

 sand diameters. 



Sponges are 

 principally of two 

 kinds — those wdth 

 skeletons or sup- 

 porting structures 

 of sihca (i. e. flint) 

 and those 

 Alcove 2 with skel- 

 Sponges etons o f 



European commercial sponge comparable with the Florida 

 yellow sponge or " Hardhead." The sponge industry in both 

 the Mediterranean and the Bahama region is almost destroyed by 

 careless methods, and conservation must be practiced here as in 

 other of the world's resources. 



horn. The 

 sponges of commerce belong to the latter class. In the specimens exhib- 

 ited the skeleton only can be seen, the hving tissue having been removed. 



37 



