PEEFACE. 



THE present Work is confined to a description of the 

 Sub-kingdoms and Classes of Animals. As it is desirable 

 that students should have some knowledge of Animal 

 Physiology before entering on the study of Zoology, less 

 space is devoted to the Vertebrata than is usual in Zoolo- 

 gical works. The higher animals are described first, as 

 it is believed that this arrangement is more suitable for 

 beginners. 



The Author has tried to adapt his language to the 

 capacity of the students who attend classes in connection 

 with the Department of Science and Art, and the more 

 advanced pupils in schools. Technical terms have been 

 freely used, but their derivation is always given, and full 

 explanations will be found in the Glossary. Questions 

 for Examination are added to each Chapter, which will, 

 it is hoped, be found useful to both teachers and pupils. 



Materials have been drawn from a great variety of 

 sources, but the Author especially acknowledges his 

 obligations to the works of PROFESSOR HUXLEY, DR. 

 NICHOLSON, DR. HAUGHTON, and MR. GOSSE. The 

 Illustrations, of which there are sixty-two, have been 

 mainly derived from GERVAIS' Elements de Zoologie. 



MODEL SCHOOL, 

 NEWTOWNARDS, November, 187 S* 



526 ti 



