July 8, 1904.] 



SCIENCE. 



39 



some were made impromptn, in response 

 to special request. 



Harvard University. — Aromatic addi- 

 tion products, especially new derivatives of 

 tetrabromorthoquinone. Detection and 

 estimation of small quantities of arsenic 

 and antimony in toxicological work. Dis- 

 sociation of certain addition products, as 

 phenoquinone, in benzene solution. Atomic 

 weights of iodine, cadmium, sodium, etc. 

 Decomposition of silver oxide above 300°. 

 Conductivity of potassium iodide in melted 

 iodine. Energy changes of iron and 

 nickel. Study of amalgam cells. Study 

 of specific heats of liquids by a new method. 

 Continuations of certain former investiga- 

 tions. 



Columbia University. — Various research- 

 es in physiological chemistry, some of 

 which have already been piiblished. Or- 

 ganic : On m-aminobenzonitrile. Extension 

 of synthetic methods for the preparation 

 of quinazolines. Physical : combination of 

 a solvent with the ions. Dissociation of 

 lead nitrate. Thermo-chemistry of electro- 

 lytic dissociation. Ionic equilibrium of 

 solutions of potassium silver cyanide, etc. 

 Industrial: Electrical preparation of me- 

 tallic magnesium. Extraction of radio- 

 active bodies from earnotite. Analytical: 

 Reduction of lead from litharge in pre- 

 liminary assays. A crucible charge for 

 gold and silvef in zinc ores. Determination 

 of molybdenum in steel, etc. Separation 

 of thorium from cerium, etc. Determina- 

 tion of nitrogen in organic compounds. 

 Determination of formaldehyde. 



Massachusetts Institute of Technology. 

 — Physical Chemistry : Dissociation at high 

 temperatures. Conductivity of fused 

 electrolytes; also of very dilute solutions. 

 Test of a method for determining absolute 

 potential. Reaction between potassium 

 sulphocyanate and mercuric sulphocyan- 

 ate. Hydrolysis of ammonium sulphide. 

 Dissociation relations of sulphuric acid as 



determined by comparative inverting 

 power, etc. Industrial: Commercial prep- 

 aration of chloroform from acetylene. 

 Purification of low-grade rosins. Bleaching 

 with sodium hypochlorite. Hydrocarbons 

 in distilled wool grease. Organic: Sys- 

 tematic identification of nitrogen com- 

 pounds. Experiments with a view to pre- 

 paring a bivalent carbon compound. 



University of California. — Gravimetric 

 determination of free acids. Investigation 

 of California petroleum, and also of tar 

 from oil distillation. Action of nitrogen 

 on various oxides in presence of carbon. 

 Solubility of salts of boric acid in presence 

 of salts of other acids. New method of ex- 

 traction from sulphide ores. On the ex- 

 istence of ethei's of fulminic acid. Chem- 

 ical reactions of the cyanide process. Co- 

 precipitation of gold and platinum with 

 silver chloride. Constitution of p-nitroso 

 compounds. Synthesis of acetylene deriva- 

 tives. 



Yale University. — Kent Laboratory: In 

 addition to eleven papers already pub- 

 lished, there are sixteen investigations, 

 some of Avhich are completed but not yet 

 reported upon, while others are still in 

 progress. Sheffield Laboratory: Work on 

 double and triple salts. Heat of combus- 

 tion of carbon from acetylene. Pyrimidine 

 derivatives. Thiocyanates and isothio- 

 eyanates. Triazoles. Labox-atory of 

 Physiological Chemistry: Study of certain 

 aspects of nutrition. Paths of excretion 

 for inorganic compounds. Physiological 

 chemistry of the compounds. Physiolog- 

 ical chemistry of the invertebrates. Utili- 

 zation of proteids. 



University of Chicago. — Dissociation 

 phenomena in the glycol and glycerin 

 series. Relations between the forms of 

 sulphur. Velocity of saponification of 

 imido ethers. Stereoisomeric chlorimido 

 derivatives and the Beckmann rearrange- 

 ment. Constitution of purpuric acid. 



