342 ANNUAL OF SCIENTIFIC DISCOVERY. 



December isotherm of 50, and contains the Fuegian province. 9. 

 The southern polar homoiozoic belt consists of the antarctic province. 

 Its limit is the isotherm of 41 for December. 



The provinces which are referred to were also defined by the learned 

 Professor, but we can here merely enumerate them. They are 25 in 

 number: 1. Arctic; 2. Boreal; 3. Celtic; 4. Lusitanian ; 5. Medi- 

 terranean ; 6. West African ; 7. South African ; 8. Indo-Pacific ; 9. 

 Australian; 10. Japonian ; 11. Mantchourian ; 12. Ochotyian ; 13. 

 Sitchian; 14. Oregonian ; 15. Californian ; 16. Panamian ; 17. Peru- 

 vian ; 18. Araucaman ; 19. Fuegian; 20. Antarctic ; 21. East Pata- 

 gonian ; 22. Urugavian ; 23. Caribbean ; 24. Carolinian ; 25. Virgin- 

 ian. Full reference was made to the authorities from whom the data 

 for the establishment of these provinces were taken. 



The Professor further laid before the Association, a new nomencla- 

 ture and re-arrangement of the facts ascertained with regard to the 

 distribution of marine creatures in depth. He now divides the regions 

 of depth into five bathymetrical zones : 1. The littoral zone, char- 

 acterized by Littorince and Purpwrce, and occupying the whole space 

 between high and low water marks. In the Celtic province this zone is 

 clearly divided into four sub-regions. 2. The circumlittoral zone, 

 between low water mark and a depth of about fifteen fathoms. It is 

 the zone of Laminarice in the Northern Atlantic, of Zostera and Cau- 

 lerpa in the Mediterranean, and of the reef-building corals in the Indo- 

 Pacific province. 3. The median zone, between fifteen fathoms and 

 fifty. This is the coralline zone of the Celtic seas. 4. The infra- 

 median zone ranges from fifty fathoms to a hundred. It is the region 

 of the deep-sea corals in the Celtic seas, and of the red coral of the 

 Mediterranean. 5. The abyssal zone extends from one hundred 

 fathoms downwards. It contains no plants, and animal life seems 

 gradually to disappear in it. In the Celtic seas this region has not 

 yet been properly explored. As a general law it may be said, that as 

 we descend in the sea the regions of depth become of greater extent, 

 and the range of species is greater. 



EFFECTS OF SWALLOWING VIRULENT MATTERS IN THE DIGES- 

 TIVE ORGANS OF MAN AND ANIMAL. 



THE following conclusions have been arrived at by M. Renault, 

 director of the veterinary school of Alfort : 



" That the dog and the pig may eat, without danger to their health, 

 all the products of secretion, whatever they may be, all remains, 

 cooked or uncooked, of animals affected with contagious diseases 

 referred to in these investigations, namely, glanders, the pestilential 

 diseases called blood of the spleen, madness, contagious typhus, and 

 the pneumonia of cattle, and the contagious epizooda of gallinacious 

 animals. 



" That it is the same with what follows with regard to the same dis- 

 eases, with the exception of that which is proper to themselves, and 

 on which it could be necessary to experiment out of the epizooticatmo 



