REPORT OF NATIONAL MUSEUM, 1922. 97 



The necessary apparatus was obtained to illustrate the follow- 

 ing pharmaceutical operations: Vaporization, distillation, desicca- 

 tion, comminution, sifting, lotion, precipitation, straining, filtration, 

 separation of immiscible liquids, dialysis, expression, and percola- 

 tion. The following companies contributed material for this ex- 

 hibit: Whitall-Tatum Co., Philadelphia, Pa., 20 pieces of pharma- 

 ceutical apparatus; the Will Corporation, of Rochester, N. Y., 11 

 specimens of laboratory apparatus; Gilpin, Langdon & Co. (Inc.), 

 Baltimore, Md., 7 powdered drugs of different degrees of fineness; 

 and Dufur & Co. (Inc.), Baltimore, Md., 6 samples of brass-wire 

 sieve cloth. 



For the purpose of showing the origin of certain of the well- 

 known alkaloids, the following concerns donated the specimens men- 

 tioned: The Hoffmann-La Roche Chemical Works (Inc.), New York 

 ChVy, 22 specimens of medicinal alkaloids; Gilpin, Langdon & Co. 

 (Inc.), Baltimore, Md.. 22 specimens of crude and powdered vege- 

 table drugs; Powers- Weightman-Rosengarten Co., Philadelphia. 

 Pa., 13 specimens of medicinal alkaloids and alkaloidal salts; and 

 Parke, Davis & Co., Detroit, Mich., 10 narcotic alkaloids and alka- 

 loidal salts. 



Among the additions to the historical medical collections the fol- 

 lowing are worthy of mention: One hundred and sixty-five photo- 

 graphs, illustrations, and pictures to show the development and 

 growth of homeopathy, contributed by Dr. W. A. Dewey, of Ann 

 Arbor, Mich. ; a Homeopathic Cyclopaedia of Drug Pathogenesy in 

 four volumes, donated by Dr. J. P. Sutherland, dean of the Boston 

 University School of Medicine, Boston, Mass.; 33 specimens of 

 standard homeopathic literature presented by Boericke & Tafel 

 (Inc.), Philadelphia, Pa.; 10 specimens and documents relating to 

 the history of homeopathy in the United States, a gift of Dr. Car- 

 roll Dunham Smith, New York City ; a case of surgical instruments 

 used during the Civil War by Dr. A. T. Still, the founder of oste- 

 opathy, contributed by Dr. George A. Still, of Kirksville, Mo. 



The most important accession to the collections representing wood 

 technology is that contributed by the Hammermill Paper Co., of 

 Erie, Pa., illustrating the manufacture and use of sulphite wood 

 pulp for writing papers. This comprises 104 specimens, 26 sepia 

 photographs, and 4 lithographic prints and is arranged in two 

 series — one in which every stage of the process is represented either 

 by a specimen or a photograph and the other to show the exact quan- 

 tity of each ingredient required to produce 100 pounds of sulphite 

 paper. 



The American Walnut Manufacturers' Association was instru- 

 mental in securing the cooperation of its members in collecting a 

 17075—22 7 



