comprehensive subject index. By H. Ling Roth. London: Kegan Paul,
Trench, Trubner & Co. Limited. 1890. 8vo. Pp xvi-159.

This work contains more than 1,200 titles of books, pamphlets, and
papers relating to sugar. Many of the titles are supplemented with
brief abstracts. The alphabetical author catalogue is followed by a
chronological table and an analytical subject index. The compilation
extends to the beginning of the year 1885, and the author promises a
supplement and possibly an annual guide.

The ambitious work is useful but very incomplete. It does not include
glucose. The author gives a list of fifteen periodicals devoted to
sugar, and omits exactly fifteen more recorded in Bolton's _Catalogue
of Scientific and Technical Periodicals_ (1665-1882). Angelo Sala's
_Saccharologia_ is not named, though mentioned in Roscoe and
Schorlemmer and elsewhere.

Notwithstanding some blemishes, this work is indispensable to chemists
desirous of becoming familiar with the literature of sugar. It is to
be hoped that a second edition brought down to date may be issued by
the author.

5. A Bibliography of Ptomaines accompanies Professor Victor C.
Vaughan's work, Ptomaines and Leucomaines. Philadelphia, 1888. (Pages
296-814.) 8vo.

Chemists will hail with pleasure the announcement that a new
dictionary of solubilities is in progress by a competent hand.
Professor Arthur M. Comey, of Tufts College, College Hill, Mass.,
writes that the work he has undertaken will be as complete as