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Physiology = 1011: — 
1. General.. .. . . ..12 
2. Circulation (vacant) 
3. Respiration (vacant) 
4. Alimentation (vacant) 
5. Excretion . . . . . . . . . . . . 12 
6. Sensation . . . . . . . . . . . . 12 
7. Experimental . , . . . . . . . . . 12 
Development =1015 : — 
1. General principles . . . . . . . . . . 12 
2. General accounts (vacant) 
3. Formation of gonads (vacant) 
4. Oviposition, etc. . . . . . . . . . . 12 
5. Larval stages .’ . . . . . . . . . . . 12 
6. Organogeny (vacant) 
7. Post-larval growth-stages . . . . . . . . 12 
8. Experimental Embryology . . . . . . . . 12 
Ethology = 1019: — 
1. General accounts . .. .. .. .. . 12 
2. Special habits . . . . . . . . . . . . 12 
3. Habitat. . . . . . . . . . . . . . 12 
4. Feeding . . . . . . . . . . . . 12 
5. Defence and protection (vacant) 
6. Locomotion . . . . . . . . . . . . 12 
7. Autotomy and Regeneration.. . . . . . . 12 
8. Parasites and Commensals . . . . . . . . 13 
9. Protection of young . , , . . . . . . . 13 
10. Sexual dimorphism (vacant) 
11. Relation to other animals (vacant) 
12. Geological aspect (vacant) 
13. Phenology (vacant) 
14. Hybridization (vacant) 
Variation and Aetiology = 1023 : — 
1. Variation in form . . . . . . . . 13 
2. Variation in colour .. .. .. .. .. 13 
3. Variation, meristic, numerical . . . . . . 13 
4. Variation, meristic, homoeotic (vacant) 
5. Variation, teratological . . . . . . . . 13 
6. Variation, bionomic (vacant) 
7. Variation, mutational . . . . . . . . . . 13 
8. Evolution . . . . . . . . . . . . 13 
9. Relations to other phyla (vacant) 
10. Phylogeny . . . . . . . . . . . . 13 
