CONTENTS 
GENERAL SUBJECTS. By J. Aimiult Thomson, M.A., F.R.S.E. 
Page 
General Works, Text Books, 
&c 1 
Theory of Evolution : 
General 6 
Variation 11 
Environment 13 
Heredity 16 
MAMMALIA. By W. 
Introduction 1 
List of Publications, with short 
notices 2 
Summary of Work on General 
Subject 40 
Summary of Systematic Work 45 
Primates . 45 
Carnivora 46 
Insectivora 48 
Page 
Special Subjects : 
Protoplasm 18 
Morphology and Physiology 
of the Cejil 20 
Oogenesis 24 
Spermatogenesis 28 
Sex and Reproduction .... 31 
L. Sclater, BA., F.Z.S. 
(Summary of Systematic Work) 
Chiroptera 49 
Rodentia . 50 
Ungulata 53 
Sirenia 58 
Cetacea 58 
Edentata . . . . 60 
Marsupialia 61 
Monotremata 62 
AYES. By A. H. Evans, M.A., F.Z.S. 
Introduction 1 
The General Subject, Titles, 
&c. 
2 
Passeres 
42 
Picariao 
54 
Psittaci 
57 
Striges 
58 
Acci pitres 
58 
Steganopodes 
59 
Herodiones 
60 
Odontoglossae 
. .... 61 
Palamedeao 
61 
Anseres . . 
Columbae 62 
Gallinae 63 
Fulicarise 64 
Alectorides 65 
Limicolae 65 
Gavise 67 
Tubiuares . 67 
Pygopodes 68 
Crypturi 68 
Ratilae 69 
Saururae 69 
Formas sedis incertae 69 
