GRAHAM, THOMAS. - THE FOUNDATION OF COLLOID CHEMISTRY.

Liquid Diffusion applied to Analysis.

(London, Richard Taylor and William Francis, 1854). 4to. No wrappers as extracted from "Philosophical Transactions" 1861, Vol. 151 - Part I. Pp. 183-224, textillustrations.

First printing of a groundbreaking paper in biochemistry and physiology, as Graham here introduced the distinction between colloidal and crystalloid substances by his method of separating animal and other fluids.

"Although some isolated investigations on colloids had been carried out before Graham, his publications in this field laid the foundations of colloid chemistry. In "On the Diffusion of Liquids," Graham applied to liquids the exact method of inquiry he had applied to gases twenty years before, and he succeeded in placing the subject of liquid diffusion on about the same footing as that to which he had raised the subject of gaseous diffusion prior to the discovery of his numerical law. He showed that the rate of diffusion was approximately proportional to the concentration of the original solution, increased with rise in temperature, and was almost constant for groups of chemically similar salts at equal absolute (not molecular) concentrations and different with different groups."(DSB).

Garrison & Morton: 688.

Order-nr.: 49415