III. PORIFERA or SPONGIDA 
ARRANGED BY 
I. B. J. SOL LAS 
CONTENTS 
II. Subject Index: — 
General works, economics, and technique = 0603 
Anatomy = 0007 
Physiology = 0611 
Development = 0615*.. 
Ethology =a 0010 . . 
Distribution : — 
Actual = 0027 
Fossil 
III. Systematic = 0031 : — 
For if era, general 
Oalcarea 
ITomocoela . . 
Heterocoela 
Ilexactinellida 
Lyssacina 
Dictyonina 
Demospongiae . . . . . . 
Tetractinellida 
Choristida . . . . . . . . 
Lithistida 
Monaxonida . , . , 
Hadromerina 
Halichondrina . . 
Keratosa 
RACK 
2 
4 
4 
4 
4 
•1 
1 
5 
5 
5 
6 
0 
0 
6 
0 
0 
6 
0 
7 
b 4 
(N-9720A) 
