42^2 Additional Notes, 



5. The fifth eudiometer has been lately proposed by Mr, 

 Davy. In this the substance used to absorb the oxygen from the 

 air is a solution of sulphat or muriat of iron in water, and im- 

 pregnated with nitrous gas. This eudiometer is simple, and its 

 indications nearly, if not quite, as accurate as those of the two 

 last mentioned. — Thompson's Chemistry. 



Note (Y), p. 151. — M. Cuvier, of France, a member of the 

 National Institute, and a celebrated zoologist, has been for some 

 time engaged in a very extensive work upon the species of quadru- 

 peds, the bones of which have been found in the interior parts of tlie 

 earth. He has undertaken to settle the controversy concerning 

 tliese animal relics. He says, that the strata of every country 

 upon earth contain bones different from those of the animals 

 which now inhabit their surface : that, with the single exception 

 of ruminant animals, all the complete fossil bones which he has 

 seen, are different from those of quadrupeds now alive : that of 

 these he has been able to ascertain twenty-three species, all cer- 

 tainly unknown at this day j and which appear to have been en- 

 tirely destroyed, though their bones evince their existence in 

 former ages. 



These species of creatures, the races of which are now extinct, 

 M. Cuvier divides into two classes — 1 . Those which have, been de- 

 termined by others j and, 2. Such as have been settled by him- 

 self. In the first he enumerates the following : 1 . The Siberian 

 unimul, which affords fossil ivory. 2. The mammoth, differing 

 from the former chiefly in the size and points of its grinders. 

 3. The long-headed rhinoceros. 4. That animal of the tardi- 

 grade family called megatherium and megalonyx. 5. An extinct 

 species of large bear. 6. Another species of the bear. 7. A 

 carnivorous anirnal, intermediate between tlie wolf and hysena. 

 8. A creature akin to the ?noose, the horns of which measure fourteen 

 feet from tip to tip. g. The great fossil tortoise. 10. The 

 Maestricht crocodile. 11. A sort of dragon. 12. An unknown 

 kind of reptile or cetaceous animal. — In the second class, the 

 chief of which have been discovered in France, M. Cuvier places 

 the following species: l.That animal the fce^A of which, ivhcn 

 impregnated iiith copper, form the occidental turquoise. 2. A 

 tapir, dlfl'ering from that of South America only in the form of 

 its grinders. 3. Another tapir, of a gigantic or elephantine 

 size. 4. A species of hippopotamos, about the size of a hog. 

 ^y 6. 7f 8, i), 10. Six fossil skeletons of an unknown species. 



