Gen . Sub. 1 
THE ZOOLOGICAL EE CORD 
FOR 1897. 
I. GENERAL SUBJECTS.* 
BY 
J. Arthur Thomson, M.A. 
CONTENTS. 
List of Titles .... 
Page 
1 
Subject Index. 
1. 
Text-books, Essays, 
and General . . . 
41 
2. 
Distribution . . . 
42 
3. 
Morphological . . . 
43 
4. 
Physiological .• . . 
44 
5. 
Protoplasm and Cell — 
a. Protoplasm . . 
46 
b. Cell, Structure 
and Function . 
46 
c. Nucleus and Cen- 
trosome . . . 
47 
d. Cell-Division . . 
48 
6. 
Ovum and Spermato- 
zoon — 
a. Ovum .... 
48 
Page 
b. Spermatozoon . 48 
c. Maturation . . 49 
d. Fertilisation . . 49 
7. Embryological . . . 49 
8. Reproduction, Sox, 
and Heredity . . 51 
9. Evolution — 
a. General ... 53 
b. Variation ... 53 
c. Modification : En- 
vironment and 
function ... 54 
d. Selection and Iso- 
lation .... 55 
e. Particular Pro- 
blems. ... 56 
I.— LIST OF TITLES.f 
1. *Ackermann, K. Die Thierbastarde. Ber. Ver. Kassel, 1897, 
pp. 103-121. 
2. Aida, T. On the growth of the ovarian ovum in Chaetognaths. Annot. 
Zool. Japon. i, pp. 77-81, 1 pi. 
* It will be understood that papers recorded here may also be found under the 
various classes, n — xvm. They are included here because of their bearing on general 
questions, which, if not obvious, will in most cases be made apparent in the Subject- 
Index. 
t An asterisk prefixed to a quotation indicates throughout the volume that the 
Recorder has not seen the Journal or Work referred to. 
