Gen. Sub. 1 
THE ZOOLOGICAL RECORD 
FOR 1893. 
I. GENERAL SUBJECTS.* 
BY 
J. Arthur Thomson, M.A. 
CONTENTS. 
Page 
List of Titles . . . 1 
Subject Index. 
1. Toxt-books, Essays, and 
General 36 
2. Distribution 37 
3. Morphological 38 
4. Physiological 39 
5. Protoplasm and Cell — 
a. Protoplasm 41 
b. Cell Structure and 
Function 41 
c. Nucleus, Centroso- 
mata, &c 42 
d. Cell-division 43 
6. Ovum and Spermato- 
zoon — 
a. Oogenesis 44 
Page 
b. Spermatogenesis. . . 45 
c. Maturation 46 
d. Fertilisation 46 
7. Embryological 47 
8. Reproduction — 
a. Reproduction and 
Sex 4 50 
b. Heredity 51 
9. Evolution — 
a. General 53 
b. Variation 53 
c. Environment and 
Function 64 
d Elimination, Selec- 
tion, Isolation ... 55 
e. Particular Problems 56 
I.— LIST OF TITLES.f 
1. °Acqua, C. II microscopio, ossia guida elementare per le pih facili 
osservazioni di microscopia. Milano : 8vo, 238 pp., 81 figg. 
2. °Allara, V. II magnetismo negli animali e nelle pi ante. Milano : 
138 pp. 
* It will be understood that papers recorded here may also be recorded under the 
various classes, ii-xviii. They are included here because of their bearing on some 
general question; their relevancy, if not obvious, will in most cases be made 
apparent in the Subject Index. 
f An asterisk prefixed to a quotation indicates that the Recorder has not seen 
the Journal or Work referred to. 
