REPORT OP THE CHEMIST. 195 



Studies upon rice milling by-products have been completed. Bulletin 

 No. 330, •' The Milling of Eice and Its Mechanical and Chemical Ef- 

 fect on the Grain," has been issued jointly with the Bureau of Plant 

 Industry. 



Spices. — Studies have been made of pepper, mustard, celery, car- 

 away, and poppy seed, savory and sage leaves, and saffron to determine 

 their constants as a guide in regulatory work. The determination of 

 oxalic acid in pepper and cinnamon has led to a revision of the 

 statements in the literature on this subject. Gingerol, the pungent 

 principle of ginger, an oily liquid boiling at 227° to 229° C. at 6 mm. 

 pressure, and paradol, isolated from grains of paradise, have been 

 studied. 



Fats and oils. — In cooperation with the Bureau of Plant Indus- 

 try a bulletin has been issued upon peanut oil. A paper has been 

 issued upon American charlock oil. 



Drugs and pharmacology. — Papers have been published on " The 

 Stability of Nitrous Ether " and on the " Periodides of Fhenacetm, 

 Methacetin, and Triphenin." The results of investigations upon the 

 k ' Periodides of Antipyrin, Iodantipyrin, Pyramidon " have been 

 completed for publication. 



Studies upon the heavy metals that may contaminate foods have 

 been continued and some of the results published under the title. 

 " The Influence of Heavy Metals on the Intestines." Papers upon the 

 action of citrate and its decomposition in the body and upon the 

 elimination of malate have been prepared for publication. An 

 article on the toxicity of a series of oil-soluble dyes in which it is 

 shown that some of them are eliminated in the urine combined with 

 glycuronic acid has been finished and will soon be published. x\s a 

 by-product of the study of the toxicity of water-soluble dyes contain- 

 ing iodin in the molecule, a research upon the influence of iodin and 

 sodium iodid on the circulation has been printed. It has been found 

 that digitalis and adrenalin antagonize the toxic heart action of oil 

 of chenopodium while cafTeiii is synergistic. The result of this 

 investigation has been published. 



Insecticides and Fungicides. — A tree-banding material has been 

 developed which has been used by the Bureau of Entomology in its 

 gipsy moth campaign. It promises to prove superior to and cheaper 

 than the materials now in use in this country. 



The Federal Horticultural Board has been further assisted in the 

 fumigation of cotton bales, and the process has been so improved 

 that a large part of the hydrocyanic acid used is recovered. One of 

 the largest plants is now operating by this method. 



In cooperation with the Bureau of Plant Industry attempts are 

 being made to so modify the formula for Bordeaux mixture as to 

 render it more efficient while at the same time reducing the amount of 

 copper therein. 



A paper upon the reduction of As v to As 111 by cuprous chlorid 

 and the determination of arsenic by distillation as arsenic trichlorid 

 has been published while others upon " The Preparation and Proper- 

 ties of Lead Chlor- Arsenate — Artificial Mimetite " and " The Arse- 

 nates of Lead " are in press. 



Analytical methods. — Methods for the estimation of volatile 

 esters in citrus oils and extract, of alcohol in the presence of phenol, 



