100 



SCIENCE. 



[N. S. Vol. XVIII. No. 447. 



2-Amino-3,5-hibrombenzoic Acid, its Ni- 

 trite, and Synthesis of Qwinazolines from 

 the Latter: Makston T. Bogert and 

 William F. Hajstd. 



Both anthranilic acid and its nitrile can 

 be brominated directly by the nascent bro- 

 mine obtained by the interaction of potas- 

 sium bromide, potassium bromate and hy- 

 drochloric acid. Anthranilic acid gives, in 

 this way, 2-amino-3,5-bibrombenzoic acid. 

 The nitrile gives the corresponding bibrom 

 compound. 



The Acids of the Colophonium of the 

 Northern Pine: G. B. Frankforteb and 

 Clara Hillesheim. 



The colophonium of the northern pine, 

 instead of being, as Luce thinks, a single 

 compound corresponding to the acid 

 C20H30O2 (abietie acid), is found to con- 

 tain two acids, CogHggOg and C38H55O4, 

 which can be separated in the form of the 

 ammonium salts by passing dry ammonia 

 into a dry ethereal solution. 

 The Products of the Pitch of the Douglass 

 Fir: G. B. Frankforter. 

 The butt of this tree is unusually rich in 

 pitch, containing as high as 41.6 per cent. 

 Of the pitch, 21 per cent, is turpentine. 

 The latter has about the same boiling- 

 point as that from the northern pine 

 (150°) but differs from it in other prop- 

 erties. The turpentine and other products 

 (pyroligneous acid, charcoal, etc.) from 

 one such butt discarded by the lumbermen 

 would have a value of $275. 



This paper elicited much interesting dis- 

 cussion, especially with reference to the 

 decrease in the production of turpentine 

 in the south. 



The Derivatives of Eugenol: G. B. Frank- 

 forter and Max Lands. 

 Eugenol forms a di-, tri- and tetr.a- 

 bromide, in each of which all but one 

 bromine atom enter the ring. In the case 

 of chlorine derivatives all but tivo atoms 



enter the ring. A pentachloride was ob- 

 tained, but not a pentabromide. 



The Synthesis of f^-Methyladipic Acid: 

 W. A. NoYES and I. J. Cox. 

 This is the first synthesis of this com- 

 pound from simple materials; by starting 

 with levulinic acid, passing to the valero- 

 lactone, thence to r-bromvalerie ester and 

 synthesizing with cyan-acetic ester. «-/?- 

 dimethyladipic acid was also obtained. 

 Kansas Petroleum: Edward Bartow. 



The field is comparatively new. Nine- 

 teen specimens collected from various parts 

 of the state show the unusual variation of 

 from 0.84 to 0.94 S. G., and a very low 

 sulphur content. The bromine absorption 

 is greatest for the heavy oils. 

 The Determination of Sulphur in Iron: 

 Allen P. Ford and Ogden G. Willey. 

 A review of the methods in common iise. 

 Evolution methods usually give results en- 

 tirely too low ; oxidation methods give good 

 results when worked by men who under- 

 stand them. Bamber's method is recom- 

 mended as being generally applicable, and 

 deserving of more attention than it has 

 received. 



The Toxic Limits of Acid for Some Seed- 

 lings: Frank K. Cameron. 

 The results of these experiments show 

 clearly that, owing to variations caused by 

 the effects of light, temperature and the 

 individual characters of plants, methods of 

 this nature do not furnish safe conclusions 

 in physical-chemical investigations. 

 On the Chemistry of the Colon Bacillus: 



Mart F. Leach. (By title.) 

 Nitrification in Arable Soils: W. A. "With- 

 ers and G. S. Fraps. (By title.) 

 Analysis of Sea Water from Woods Hole, 

 3Iass.: A. P. Saunders. 

 Analysis of a small sample showed a 

 total of solid constituents much lower than 

 that usually given for Atlantic water. 



