ÆOLUS, in mechanics, a small machine invented by Mr Tidd for refreshing or changing the air in rooms when it becomes too hot or otherwise unfit for respiration. The æolus is so contrived as to supply the place of a square of glass in the window, where it works, with very little noise, like the falls of a wind-mill or a smoke-jack.
AEROLOGY is a branch of science which was detailed
Afghans tailed in the Encyclopædia at sufficient length, and according to the principles which were then generally admitted by chemists. Subsequent experiments, however, have shown, that some of those principles are erroneous, and of course that some of the opinions advanced in the article AEROLGY are inconsistent with facts. These opinions must be corrected; but instead of swelling this volume with a new article AEROLGY, we apprehend that it will be more acceptable to our scientific readers to refer them for those corrections to the article CHEMISTRY in this Supplement.