VOL.7, No. 6
ORGANIZATION OF HIGH-SCHOOL CLUB
1331
Miscellaneous BENBDICT,F. G., "Chemical Lecture Experiments," The Mamillan Company. New York City, 1901. DAVISON,H. F., "A Collection of Chemical Lecture Experiments," The Chemical Catalog Co., Inc., New York City, 1926. NEWTH,G. S., "Chemical Lecture Experiments," Longmans, Green and Company. New York City. 1910. BOARDOP FIRE UNDERWRITBRS. "The Trial of Fire." 76 Williams St., NATIONAL New York City. UNIVERSITYAPPARATUS COMPANY, "The Plant Wizard," 2229 Nugee Ave., Berkeley, California.
Special Activities THIS JOURNAL BAWDEN. ARTHURT.. "A Chemical Party," 4. 86 (1927), BELL,FANNIE L., "A Chemistry Exhibit," 5, 280 (1928); "Posters in Chemistry." 5, 157 (1928). BREWINMON, G. P., "Lead Trees Grown in Gels," 6, 222840 (Dec., 1929). DUNBAR.RALPHE.. "The Chemistry Open House as an Aid in Instruction," 5, 531 (1928). ELKING. ESTXER,"The Game of Chemists," 7, 636 (1930). JACOBS.A. H., "Chemical Posters," 2, 792 (1925). KISTLER. R. C., "Selling High-School Chemistry t o the Community," 7, 1324-6 (June. 1930). LAW,S. D., "High-School Projects in Chemistry," 6, 1139 (1929). Pnicnnnn, D. W., "The Water Supply," 5, 1671 (Dee., 1928). Pnurrr, CLARENCE M., "Activities of Chemistry Clubs," 4, 1037 (1927). RAKESTRAW, NORRISW.. "A Model Chembtry Clubroom," 7, 891 (1930). SPIERS,C. H.. "A Chemical Museum Exhibit," 6, 730 (1929). STONE.CHARLES H., "Posters in High-School CWmistry," 6, 1535 (1929).; "Lead Tree (Arbor Satumii)." 6, 355-6 (Feb.. 1929). School Science and Mathematics FELDXAN, I,. C.. "Outside of Classroom Activities in Science," 20, 700 (1920). HEnaIo'rT, M. E., "Assembly Programs from Class Work," 25, 150 (1925). ~
Metallized Bank Notes. Just twenty years ago M. C. Schwp, of Zurich, began the development of a process for metallizing wood, paper, and other materials, in which the bv with droplets of molten metal. The improvements surfaces ~ ~ are - metallized ~ . soatterinz . of subsequent years included means for melting the metal in an electric arc or in an oxy-hydrogen burner of special construction, with atomizing nozzles of different types and mechanical devices t o regulate the thickness of deposits by mntrolling the rate of feed. The metals that lend themselves to the production of extremely thin films by this process are especially copper, zinc, tin, lead, and aluminum. A year ago announcements were made of a method of metallizing paper with zinc or copper, in which the essential feature was a device for regulating the rate of movement of a sheet of paper below an atomizing nozzle, to correspond with the rate a t which the metal was atomized. At present the method has attained a degree of success that leads the inventor ti hope for the production of bank notes, coated with tin or copper, which may readily be folded or crumpled, but which will be impossible t o ignite, very difficult to tear, and of extraordinary wearing quality. The metallized paper has some applications in prospect in telephone and radio technic.-Ind. Bull., A. D. Little, Inc. ~
