Arthur S. La Pine and Company is proud to announce their appointment as sole U.S.A. distributor of the Atom Models according to Stuart and Briegleb manufactured by E. Leybold's Nachfolger, Cologne, Germany. These models are of the "quick fastener" type, and are larger than any comparable models now on the market, representing the spheres of action of single atoms at a magnification of 1.5 χ 10 8 . More models (2ό) are available than in comparable sets. New design features, such as a special "hydrogen-bridge" hydrogen model and spring wedges enabling rigid connections for multiple bonds are included. Kits are furnished in partitioned fibreboard cases. Single models are readily available.
• · · -CHEMICALS· · · ·
ARTHUR S. LaPINE and COMPANY LAPINE
6001 S. KNOX AVE., CHICAGO 29, 111.
L A B O R A T O R Y SUPPLIES - E Q U I P M E N T For further Information, circle number 10 A on Readers' Service Card, page 45 A
10 A
ANALYTICAL
CHEMISTRY
