Recent studies indicate that viruses are associated with many types of cancerous tumors. The authors propose that complex inorganic compounds might be successfully used in the alteration of these viruses with the consequent destruction or diminution of their activity. Twenty-six complex inorganic compounds have been

The kinetics of the exchange of DzO vapor with crystalline boehmite (particle size ca. 1 p ) were studied froin 85-151". The Berthier exchange ratio C (number of exchangeable atoms in the solid relative to vapor phase) ranged from 0.7 to 2.3. The DzO pressure was varied from 0.41 to 0.95 atm. A rapid initial surface exchange preceded the slower diffusion-controlled exchange with the bulk crystal. After correction for this surface exchange the data followed the appropriate diffusion equation (spherical particle case). Due to the uncertainty in crystallite size absolute values of the diffusion coefficient D are in doubt by a large (but constant) factor. However, the temperature dependence of D furnishes a reliable value for the activation energy: ED = 12.9 z t 0.8 kcal./mole. Auxiliary exchange experiments carried out with D20l8 showed very slow exchange of 0 1 8 compared to that of deuterium. This suggefits independent migration of protons (deuterons) and oxygen carrier ions through the boeliinite lattice.

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