432 New Publications. 



lean, and their hair stands on end and falls off. They are often 

 feverish ; and if in this state they are in any way violently ex- 

 cited, after some days of severe suffering they die in convul- 

 sions. When they are labouring under this disease, the bites 

 of these animals are very dangerous. To prevent its fatal ef- 

 fects, the camel-drivers are in the habit of muzzling them at 

 these times, and are scrupulously cautious lest they be bitten. 



15. Experiments upon the Torpedo. — M. Matteucci, in a 

 letter addressed to M. Dulong, announces that new experiments 

 which he has recently made upon the torpedo completely con- 

 firm the results he had previously obtained respecting the un- 

 equal po^ver of different parts of the brain in the production of 

 shocks ; thus the hemispheres of the cerebrum may be touched, 

 wounded, and even removed without a discharge taking place. 

 Again, it may be obtained, but only whilst the animal is very 

 lively, from the thalami nervorum optkorum (couches optiques) 

 situated between the hemispheres of the cerebrum and cerebel- 

 lum. As to the cerebellum (quatrieme lobe J, it cannot be touched 

 without producing a discharge ; the effect is still produced, 

 some time even after the death of the animal, and when this 

 part is removed all discharge ceases. 



NEW PUBLICATIONS. 



1. Zoology of the Voyage of H. M. S. Beagie, under the command of Capt. 

 Fitzroy, during the years 1832 to 1886. No. II. of Part II. Recent 

 Mammalia. By George R. WaterhousEj Esq. Smith, Elder & Co., 

 London. 



This part 2d of No. II. of the Recent Mammalia of the Beagle 

 Voyage contains descriptions and histories of the Canis Magella- 

 nicus,Julvipes, and Azarce ; of Felis Yagouarofidi and pnjeros ; 

 of Delphinus FHz-Royi ; also remarks on the Guanaco of the 

 aborigines of Chili; and an account of the Cervus campestris. 

 There are six very interesting and beautifully executed co- 

 loured engravings of nine species of Muridae, to be described 

 in a future part. 



No. 1st of part 3d, which has just reached us, contains ac- 

 curately drawn and beautifully coloured representations of 

 birds, by Mrs and Mr Gould ; with notices of the habits and 

 ranges of the tribes and species, by Mr Darwin. But our par- 

 ticular notice of this part must be delayed until our next number. 



