508 EXPERIMENT STATION RECORD. 



E. E. Ewell presented a method for the determination of the specific 

 gravity of fats. The question of making determinations at lOC^ C. 

 instead of at the temperature of boiling water was referred to the ref- 

 eree for next 3"ear. 



TAXXIX. 



The report on tannin was presented by O. Carr. W, H. Krug read 

 a paper on Comparative hide-powder tests. He suggested that in addi- 

 tion to the present requirements a clause be inserted to the effect that 

 the hide powder used in the determination of the nontannins shall be 

 neutral. 



A paper by H. W. Wiley and W. H. Krug reported results of a 

 Comparison of the international tilter-tube method and the official hide- 

 powder method. The results show that the lilter-tube method gives 

 lower nontannins and correspondingly higher tannins than the official 

 method. Attention was called to the necessity, in the interest of com- 

 merce, of a uniform international method. 



The use of the centrifugal and the pasteur filter in the estimation of 

 tannin was adopted. 



FUXGICIDES AXD INSECTICIDES. 



The report of the associate referee, L. A. Voorhees, consisted largely 

 of a further compilation of methods. The methods of 13 analysts 

 were given in full, and the}" were adopted provisionally for trial and 

 comparison in actual analytical work. 



No report on sugar analysis was rendered by the referee on that 

 subject. The referee for next year was instructed to investigate and 

 report upon the relative value of the present official method and the 

 German method for the optical determination of sucrose l)y inversion. 



H. W. Wiley presented a report of the meeting of the International 

 Congress of Chemists. 



The secretary was requested to insert in the next edition of the 

 methods of analysis the latest revision of the table of atomic weights 

 reported by the committee of the American Chemical Society. 



The report of the abstract committee was made by W. H. Beal. 



Resolutions were adopted indorsing the movement toward the estab- 

 lishment of a national standardizing liureau. 



OFFICERS OF THE ASSOCIATION. 



The officers elected for the ensuing year are as follows: President, 

 L. L. Van Slj^ke, Geneva, N. Y.: vice-president, H. J. Wheeler, 

 Kingston, R. I.; secretary, H. W. Wiley. Washington, D. C. ; addi- 

 tional members of executive conunittee. ^^^ R. Perkins, Agricultural 

 College, Miss., and F. W. Traphagen, Bozeman, Mont. 



