CONTENTS. 
GENERAL SUBJECTS. By J. 
Page 
Text Books, General Works, 
Essays, &c 1 
Theory of Evolution : 
General 9 
Environment 15 
Heredity 17 
Arthur Thomson, M.A., F.R.S.E. 
Page 
Special Subjects : 
Cell and Protoplasm .... 19 
Oogenesis 22 
Spermatogenesis 26 
Sex and Reproduction .... 27 
MAMMALIA. By R. Lydekker, B.A., F.G.S. 
Introduction 1 
The General Subject 2 
Faunas 19 
Special Structures, Develop- 
ment, &c . 20 
Special Work 21 
Primates, 21 
Chiroptora . 26 
Insectivora 24 
Carnivora .... 
Rodentia 
Ungulata . . . . 
Cetacea 
Sirenia 
Edentata .... 
Marsupialia . . . 
Multituberculata 
26 
31 
39 
47 
50 
50 
50 
50 
AYES. By R. Bowdler Sharpe, LL.D. 
Introduction 1 
The General Subject 2 
Ratitae 22 
Rheiformes 22 
Struthionif ormes 22 
Casuariiformes 22 
Apterygif ormes 23 
Carinatae 23 
Crypturif ormes 23 
Galliformes 23 
Columbiformes 25 
Opisthocomiformos 26 
Ralliformes 26 
Heliornithiformes ...!.. 27 
Hesperornithiformes 27 
Podicipedidiformes 27 
Colym biformes . 27 
Procellariif ormes ;...... 27 
Alciformes 28 
Lariformes 28 
Charadriiformes ....... 29 
Gruif ormes . 31 
Pelargif ormes 31 
Phaenicopteriformes 32 
Anseriformes 32 
Pelecaniformes 33 
Cathartidiformes 34 
A.ccipitriformes 34 
Striges 36 
Coraciiformes 37 
Trogones 39 
Coccyges 40 
Psittaciformes ......... 40 
Scansores 41 
Picif ormes 41 
Eurylaemi 42 
Menurae 43 
Passeriformes 43 
Passe res abnor males '. 64 
