226 Scientific Intelligence. 
Hence between 1242° and 1567° the density of chlorine gas is 
constant at two-thirds of its normal value, and its molecular 
Pv 
: Beas 
P P Py Po. 
127°223 51594 Jiee 
128-296 168-684 52860 09760 
158-563 208°622 54214 0°9516 
190°855 251°127 55850 0°9238 
221-103 290-924 57796 0°8927 
252-353 332-039 59921 0°8613 
283-710 373°302 62708 0°8297 
327-388 430-773 65428 0°7885 
w.— C. R., lxxxviii, 1879, p. 336; Beiblatter Annalen der Physik, 
No. 6, 1879, p. 414. niga 
: ments of Modern Chemistry ; by Apvotene WURT%, 
Professor of Chemistry of the Faculty of Medicine of Paris, ete. 
Translated, with the Author’s approval, b M.D. 
k y Wm. H. Green, M1 
687 PP. 12mo, with 132 illustrations, Philadelphia, 1879. (Lippi- 
cott & Co.).—In a preface to this American edition of Professor 
Wurtz’s Chemistry, the author states that his friend and former 
pupil, Dr. Green, presents in this translation “a faithful, or even 
improved, representation of the original work.” The hand of 
er 
