Page:Outlines of Physical Chemistry - 1899.djvu/286

 268 OUTLINES OF PHYSICAL CHEMISTKY

Bemar7c8. — 1. The basis of this table is : = 16. This is the most practical arrangement, because almost all the atomic weights have been determined with relation to oxygen. If the weight- relation O/H were exactly known (unfortunately, it is extremely difficult to exactly establish it), then the basis of the table might be taken H - 1, as being preferable from the theoretical point of view. In the first part of this book we have frequently made use of atomic (and molecular) weights calculated for H = l, and these are consequently slightly smaller than those given in the table.

2. The existence of some of the elements Whose atomic weights lie between 140 and 173 is still more or less proble- matic.

��BIBLIOGRAPHICAL NOTE

���Besides the numerous periodicals the following works have been consulted in the preparation of this book : The works on theoretical chemistry by Wurtz, Lothar Meyer, Ostwald, and Nernst ; on thermochemistry by Berthelot arid Thomsen ; on thermodynamics by Planch ; on electro-chemistry by Le Blanc ; and on practical physical chemistry by I. Traube, Ostwald, and Biltz. '

The book ' Die mathematische Behandlung der Naturwissen- schaffcen • by Nernst and Schonflies is strongly recommended to students.

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