114 proceedings: chemical society 



He was a man of broad discernment and of high ideals, brave, yet unob- 

 trusive. One of his most noble deeds was the gift of several thousand dollars 

 to The University of Kansas, a large part of the yearly proceeds of which is to be 

 presented to the student preparing the best essay on Applied Christianity. 



The Chemical Society of Washington records with sorrow the death of their 

 fellow member and hereby places this meager testimony of his worth in its 

 minutes. 



The following program consisting of papers from the Hygienic 

 Laboratory was presented : 



C. N. Myers: The preparation of heavy metal salts of certain organic 

 acids. 



An account of the methods of preparation and the properties of some 

 of the less commonly known heavy metal salts of organic acids was 

 given. These salts were prepared for use in such pharmacological 

 investigations as are mentioned in the following abstract. 



G. C. Lake: Some observations on the toxicity and chemotherapy of 

 the heavy metals. 



This paper is a brief report on. work done, under the direction of 

 Prof. Voegtlin, with the lactates and thioglycollates of nearly all the 

 heavy metals. Toxidty was determined on rats and guinea pigs by 

 several routes of injection, the dosage being based on actual content 

 of metal, and given in mgs. per kg. of body weight. The action and 

 pathology were studied to some extent. It was found that all are rela- 

 tively toxic provided they enter the circulation. There seems to be no 

 constant relation between toxicity and atomic -weight of the metal or 

 its position in the periodic system. The preparations were all studied 

 in relation to their action on Tr. Brucei in vitro and in vivo, using rats 

 and guinea pigs. The only preparation giving any marked trypano- 

 cidal action was an antimonial. The great specificity of drugs in re- 

 gard to their chemotherapeutic action is again emphasized by this 

 work. (Author's abstract.) 



Elias Elvove: The 'separation and determination of small amounts 

 of antimony. 



Small amounts of antimony (less than 1 mg.) can be estimated by 

 comparing the color produced by treating the unknown solution with 

 hydrogen sulphide water, with the colors similarly produced in solu- 

 tions containing known amounts of antimony. As little as one- 

 hundredth of a milligram of antimony in 20 cc. can be detected by 

 means of the hydrogen sulphide test. The antimony sulphide result- 

 ing from amounts of antimony up to about 0.1 mg. in 25 cc. remains in 

 colloidal solution for an hour or two and thus admits of its colorimetric 

 estimation. In the presence of arsenic and tin (up to 5 mg.) the arsenic 

 is first separated as ammonium magnesium arsenate by the aid of the 

 simultaneous phosphate precipitation of Smith (Bur. Chem. Cir. No. 

 102). The filtrate is boiled down to about 10 cc, cooled, made up to 

 15 cc. with water acidified with 1 cc. concentrated hydrochloric acid 

 (Sp. gr. 1. 19) and boiled for two minutes. After cooling, it is diluted 

 again to 15 cc. with water further acidified by adding 5 cc. of 



