600 



SCIENCE. 



[N. S. Vol. II. No. 44. 



related compounds. They would represent the 



structure of phenoquinone, for example, by the 



following formula, in which the phenol is added 



to the carbonyl groups : 



Ce H5 O OH 



\/ 

 C 



/\ 

 HC C H 



/ 



CH 



C 



/\ 

 OH O Ce H5 



A number of derivatives of this class were 

 made and studied and various lines of research 

 mapped out for the future. 



A. S. Miller describes experiments made to 

 determine the results of the action of ammonia 

 on ferric and ferrous chloride. He found that 

 the ferric chloride formed unstable compounds 

 with ammouia, the product formed at ordinary 

 temperatures being Fe CI3.6 NH3. At 100° 

 this becomes Fe Cl.i.4 NH, and dissociates when 

 heated higher. The compound formed with 

 ferrous chloride was Fe CI,. 6 NH3. Mead and 

 Kremers show that, when so-called ' nitrosopi- 

 nene ' is hydrolysed, carvacrol and not thymol 

 is formed, and as the nitrosopinene is made 

 from pinene we can pass from pinene to carva- 

 crol. Wheeler contributes a j)reliminary paper 

 on halogen addition products of the anilides. 

 He has obtained bromine addition products of 

 metanitroacetanilide which form substitution 

 products by the loss of hydrobromic acid. 



Noyes and Ellis have prepared diphenylbiphe- 

 nyl synthetically by the action of sodium on 

 brombiphenyl and shown it to be identical with 

 the hydrocarbon benzerythrene, which is made 

 from benzene by the action of heat. Reviews 

 of several books are given, among them that 

 of Cross and Bevan on Cellulose. A note on 

 helium calls attention to its occurrence in many 

 minerals and also iu the free state, its proper- 

 ties, especially its low density and slight solu- 

 bility, and the analogies in the spectra of he- 

 lium and argon. .1. Elliott Gilpin. 



PSYCHE, NOVEMBER. 



Mr. and Mrs. G. W. Peckham give an in- 

 teresting account of the differences between 



two wasps of the genus Trypoxylon in their 

 habits of making and storing nests. H. G. 

 Dyar describes the larva of Harrisina coracina 

 found on the vine in New Mexico; and A. P. 

 Morse describes the colors of Enallagma pictum, 

 an agrionid, during life. There is also a re- 

 view of the last part of Edwards' Butterflies of 

 North America and a brief notice of the late 

 Mr. Riley. A supplement contains descriptions 

 of a new genus and several new species of New 

 Mexican bees, with notes on their habits, and a 

 notice of the early stages of Doryphora lineolafa, 

 both by T. D. A. Cockerell; and the description, 

 with figure, of a new New Mexican Thamnotet- 

 tix, by C. F. Baker. 



NEW BOOKS. 



The Scientific Foundations of Analytical Chemistry. 

 WiLHELM OsTWALD. Translated by George 

 M'Gowan. London and New York, Mac- 

 millan & Co. 1895. Pp. ix+207. $1.60. 



Dynamics. P. G. Tait. London. Adam and 

 Charles Black. New York, Macmillan & Co. 

 1895. Pp. xii+361. $2.50. 



The Structure of Man. By R. Wiedersheim. 

 Translated by H. and M. Bernard. London 

 and New York, Macmillan & Co. 1895. 

 Pp. x + 227. $2.60. 



An Introduction to the Study of Seaweeds. Lon- 

 don and New York, Macmillan & Co. 1895. 

 Pp. xvi4-271. $1.75. 



Handbook of Grasses. William Hutchinson, 

 London, Swan Sonnenschein & Co. New 

 York, Macmillan & Co. 1895. Pp. 92. 

 73 cents. 



Elements of Plant Anatomy. Emily L. Greg- 

 ory. Boston and London, Ginn <& Co. Pp. 

 \'iii-rl48. 



Iowa Geological Survey, Vol. IV. Third Annua' 

 Report, 1894. Des Moines, published for the 

 Iowa Geological Survey. Pp. 461. 



On the Densities of 0.r.yf/en and Hydrogen and on, 

 the Ratio of their Atomic Weights. Edwaed 

 W. Morley. Washington, The Smithsonian 

 Institutiou. 1895. 4° pp. xii.-f 117. 



Determina(;ao das Posicoes Geographicas. Pp. 57. 

 clima do Rio de Janeiro. Pp. 71 . Eclipses du 

 soleil et occultations. Pp. 54. L. Cruls. Rio 

 de Janeiro, H. Lombaerts & C. 1894. 



