VETERINARIAN;

Λ

MONTHLY JOURNAL OF VETERINARY SCIENCE

FOR 1859.

VOL. XXXII-VOL. V, FOURTH SERIES.

EDITED BY

PROFESSORS MORTON AND SIMONDS.

Ars Veterinaria post medicinam secunda est.-Vegetius.

MOTHES

LONDON:

PRINTED BY J. E. ADLARD, BARTHOLOMEW CLOSE.

PUBLISHED BY LONGMAN, GREEN, LONGMANS, AND ROBERTS,

PATERNOSTER ROW.

Ir is universally acknowledged that this is an age of progress. Great and marvellous are the truths that from time to time burst upon the mind in its investigations of the wonders that surround us in nature; and the principles therein involved being made obvious, and then transferred to art, render this also a practical age. Nor do we content ourselves with present discoveries, but the past are likewise called into requisition by us, and, being applied, are also rendered useful; by which means mankind is benefited as a whole, either by "lessening the many ills that flesh is heir to," or contributing to the comforts or the necessaries of life.

Professor Owen, in the fine address which he gave at the opening of the late meeting of the British Association for the Advancement of Science, extracts from which appeared in a recent number of our Journal, referring to the progress of chemistry, says: "The present tendency of the higher generalization of chemistry seems to be towards a reduction of the number of those bodies which are called elementary. It begins to be suspected that certain groups of these socalled chemical elements are but modified forms one of another-allotropic forms of some one element." Dumas first broached this subject, and some persons thought, by his statement, that he favored the idea of the transmutation of bodies; he, however, referred only to those substances which, possessing a relationship to each other, rendered such a change probable, and even possible. In these triad groups, -so designated by this philosopher-it has been observed, that the intermediate body has most of its properties the intermediate of those of the two extremes. Take, as illus

XXXII.

1