Scientific Intelligence. 129 



work ia especially designed for the use of the massea. The vegetatioa of the entire 

 globe is passed in review and considered in its relations both to men and animals, 



lisbed his adventures amf^^obsen-atioM iaa^stvie at once picturesque and enter- 

 taiaiog. 



Chez H. BOSSANGE, Librarie Quai Voltaire a Paris. 

 A. Belem.-^Ehides snr le Metamorplnsme des Roches. Large Quarto. 1861.— 

 This work contains the important researches which we have formerly rcporte(l and 

 whioh have been l»m.rably noticed by the Academy of Science. Sir Delesse 

 M« treated principally upon general or normal metamorphism. Considermg the 



«^mmon in DTturT' The^res''oTiron,'^coppIr%nd^Srare successively esamined. 

 Trachyte, basalt, and the recent volcanic rocks ought equally to undergo meta- 

 ^phisms analogous to the preceding, and Mr. Delesse thinks that these rocks ara 



V. Meimier.'~D77orfLerie°m7c!ltche,m^ Hi^toire et Description. 1 vol 



I2mn. 18si._it is very generally admitted that electro-chemical g.ldmg ^as m- 



J:>- cle Ruolz. and in France especially this name has ^'^'="'''^J'™[^7^'^^^^ 



■-.nJiirweJe Tsf^BrugL'Tanf XmidVSking^oa' 'm. deTuoU 

 -y come after them and has not even perfected the processes ; such is the 

 --n of the book. It is necessary to refer to the book for the «»^^y™^^"*.J 



*5ul,| be anticipated from his attemipt to overthrow the houor of a Dame which 



SCIENTIFIC INTELLIGENCE. 



I. PHYSICS AXD CHEMISTEY. 

 '^ the Spectrum aforded hf solution of Nitrate of Didymium, 

 '■ letter of Professor O. N. Rood to Dr. Wolcott Gibbs.>-You 

 ■mber calling my attention to tbe curious fact, that Gladstone had 

 . ^^i two dark lines in the spectrum furnished by light transmitted 

 .' dilute solutions of the nitrate of didymiura. 

 '^^e lately repeated the experiment with the sample of this snb- 

 ; you kindly placed at my disposal, using quite strong solutions of 

 Lraki- ^i.- r * , . r S _._u ^e iU^ ^^cn te nhtMinpd. which 



^f', length, CO! 



sketch < 



!?amp or sunlight is transmitted through a tube 

 aining a strong solution of the salt i" ^l".'^"^^'""' ^ 

 by the spectroscope of Bunsen «°'l/"-<-'bhof 1 

 ised by twelve distinct lines or bands, some bei 

 >irD Series, Vol. XXXIV, No. IOO.-Jclt, 1863. 



