262 Scientific Intelligence. 



Tlie sea scenes of Mr, LeGray are mucli admired. They rep- 

 resent ships under ^yaj with full sail, a stormy sea, clouds float- 

 ing in the air and crossed by a beam of the sun, all instantane- 

 ously taken. ~^ 



Mr. Negr 



hie pictures 



parent views, and printed in the photographic printing establish- 

 ment of Blanquart-Everard de Lille. There are casts (cliches) 

 obtained by means of collodion on gutta percha. rendered trans- 

 parent by a process invented by M. Perret, a modest workman 

 of Paris, These sheets of collodion have colossal dimensionSj 

 being about a meter high and eighty-eight centimeters wide ; 

 they are nearly as light as a spider's web. 



Bibliography. — At the book establishment of Ilachette, at 

 Paris, the following works, in 12mo3 have appeared: 



L. Figuier: The &ientijic and Industrial Aiinual^ containing 

 an exposition of the scientific works, inventions, and principal 

 scientific applications which in 1856 attracted public attention in 

 France and other lands. A similar volume appears each year. 



A. YsABEAU : Gardening^ or the art of making and heeping a 

 garden. 



HervI: and DeLaistoye : Voyages in the ice of the Arctic Pole 

 in search of a northwest passage ; extracts from different voyages. 



Leojs^E d'Aunet : Voyage of a woman to Spitzhergen. 



T. deLanoye: The India of the present era: with an introduc- 

 tion giving a brief history of these regions so rich and interesting. 



Ch. Dkeyss, Professor at the Lyceum of Versailles : Universal 

 Chronology^ followed with a list of ancient and modern states. 



Chronology 



Historical Dictionary of 



and Customs of France. 2 vols, of 564 pages in two columns. 

 The work is preceded by an introduction which gives a chrono- 

 logical catalogue of the institutioDS, or the public life, and the 

 progress of manners, or the mivate life- of the French. 



SCIENTIFIC IIVTELLIGENCE- 



I* CHEMISTRY AND PHYSICS. 



!• On a neif) hiacid alcohoh—'Li'swmcnT has ioimi that chlorbenzol, 

 CuIIeCla, is the chlorid of a radical yielding a new bibasic alcohol analo- 

 gous to Wurtz's glycol The preparation of the pure alcohol is attended 

 with difficulty in consequence of the facility with which it is converted 

 into oil of bitter almonds, but Limpricht has prepared Various ethers 

 which leave no doubt as to the correctness of his views. Ethyl-benzol 

 ether may be prepared by the action of chlorbenzol upon ethylate of soda. 



It is an oil with an agreeable odor and having the formula tQ^n^Y \ ^^' 



