THE very important letter of Dr. Aston in NATURE of December 18, 1919, gives much evidence in favour of a theory of the structure and composition of the nuclei of complex atoms as published by me five ...
Because they are in such wide use, the hazards of common chemicals sometimes are taken for granted. Complacency can set in and improper procedures may be used by those who work with the chemicals ...
I HAVE read Prof. Harkins's letter with great interest. If Prof. Harkins has succeeded in separating the isotopic hydrochloric acids he is certainly to be congratulated. The very meagre positive ...
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