FA6E 



15. The formation of monsters - 157 



16. Accidents may give birth to monsters - 138 



17. Application to vegetables - 139 



18. The mystery of the generation of plants cleared up 140 



CHAP, VIII, 



Of Animal Economy, considered in Insects. 



1, Introduction - - 14 1 



2, The mechanism of respiration - ib 

 o. The circulation - - 142 



4. The organs of generation, and their dependencies 143 



5. Distinction of insects into viviparous and oviparous J44 



6. Varieties of generation . J45 



7. The vine-fretter J46 



8. Zoophytes, or plant-animals without feet. Fresh- 



water worms - - 148 



9. Cluster polypuses - - 151 

 3 0. Funnel polypuses - - 153 



1 1 . Net polypuses ~ ** - 154 



12. The polypus with arms - - ib. 



13. Philosophical considerations on the subject of 



polypuses ... 155166 



CHAP. IX. 



Continuation of Animal Economy considered in 

 Insects. 



I. Thoughts on the regeneration of earth-worms 167 



t, The regeneration of faesh water worms .tfcS 



