I HAVE made an attempt to put forth in some kind of orderly sequence a few of the chief guiding conceptions of chemistry; endeavouring, on the one hand,

TO avoid technical details, and, on the other hand, to illustrate these conceptions by describing many common facts. I have tried to keep the attention of the reader fixed on the great generalisations of chemistry; and I have done my best to shew that these generalisations find constant application in the occurrences of everyday life.

[AUTHOR]

THIS little Hand-book is intended to supply manufacturing chemists, dyers, drysalters, druggists, brokers, and all persons interested in the chemical arts, with directions for the assay and valuation of those articles of commerce which come into their hands. For this purpose the best and simplest methods have been selected, and stated, it is hoped, with the needful clearness.

The impurities-accidental or intentional-found in each substance are also noted. Articles of food are not included in ...