o 
Development = 1015 
PAOK 
23 
General 
23 
Oogenesis and Ovum 
. # 
23 
Phenomena of Fertilization 
, , 
. . 
23 
Organogeny 
. . 
23 
Larval forms 
23 
Changes during life 
9 # 
24 
Regeneration 
. . 
# . 
24 
Experimental Embryolog}” 
24 
Ethology = 1019 .. .. .. . . 
24 
General 
, 0 
24 
Sexual dimorphism 
# # 
24 
Psychology 
24 
Symbiosis, etc. 
. # 
24 
Feeding habits 
, , 
24 
• Parasitism . . 
m # 
24 
Defensive processes 
• • 
24 
Utility ... 
24r 
Variation and Aetiology — 1023 .. 
24 
Substantive variation 
24 
Teratological variation 
. . 
25 
Hybrids, heredity. . 
# , 
25 
Evolution . . 
25 
Distribution = 1027 : — 
A. Geographical — 
i. General 
25 
ii. Atlantic Ocean and adjacent Seas . . 
m # 
25 
iii. Indian Ocean and adjacent Seas . . 
25 
iv. Pacific Ocean and adjacent Seas . . 
, # 
23 
v. Arctic Ocean and adjacent Seas 
m # 
# * 
26 
vi. Antarctic Ocean and adjacent Seas 
26 
B. Geological — 
i. General 
# # 
. . 
26 
ii. Cainozoic — 
(b) Pleistocene 
26 
(c) Pleiocene . . 
, # 
26 
(d) Meiocene . . 
26 
(e) Oligocene 
. . 
26 
(f) Eocene 
. . 
• • 
27 
iii. Mesozoic — 
(b) Cretaceous (1. Upper; 2. Lower) 
, . 
. . 
27 
(c) Jurassic (1. Upper; 2. Lower) . . 
. , 
. . 
28 
(d) Lias (including Rhaetic) . . ' 
. . 
28 
(e) Trias 
29 
