nomenclatura, a catalogue of several of the more usual words in any language, with their significations, compiled in order to facilitate the use of such words to those who are to learn the tongue: such are our Latin, Greek, French, &c. Nomenclatures.

The chemical nomenclature has within these few years undergone a total change: we have given a table exhibiting these new names facing page 598 of Volume IV. At that time we were not convinced of the propriety of the new theory, nor was it possible to foresee that it would so soon obtain the approbation of the literary world. True philosophy requires, however, that we should readily change our opinions when we see sufficient grounds, for to err is human. In consequence of Lavoisier's system being now universally adopted, it becomes necessary for us to explain his principles at more length than was thought proper before. This we think our duty, and it therefore shall be our endeavour, in some part of the work, to introduce a sufficient analysis of this celebrated and now almost universally adopted system.