CONTENTS. 
History of Zoophytology, 
Page 3 — 29 
Opinions of the Ancients, 
3—4 
Imperato, 
4 
Peyssonel and Reaumur, 
5—7 
J ussieu, 
8 
Peyssonel and Parsons, 
10—11 
Baker, 
11 — 13 
Ellis, 
13—17 
Linnaeus, 
17—20 
Baster, 
i 
to 
© 
1 
to 
oo 
Pallas and Ellis, 
24—27 
Nature of Sponges, 
28 — 29 and 325 
Zoophytes, definition of 
30—31 
Polypes, what ? 
32 
Their distinction into two classes, 
33 
The structure of Ascidian polypes. 
33—36 
Hydraform polypes. 
36—38 
Asteroid polypes, 
38—41 
Helianthoid polypes. 
41 
Circulation of the Sertulariadae, 
41—43 
Ascidian polypes, 
43—45 
Food of Polypes, - 
45—46 
Generation of polypes, and their ova, 
46—48 
Evolution of the ova, 
48—49 
The ova of the Flustrae, 
50—51 
Polypidoms, Chemical composition of, 
52—53 and 76—77 
Their forms, 
53—54 
Their formation, 
55 
Zoophytes, classification of, by Ellis, 
55 
Linnaeus, 
56 
Pallas, 
57 
Muller, 
58 
Blumenbach, 
59 
Cuvier, 
- 59—61 
Lamouroux, 
62—64 
Lamarck, 
65 — 66 
