d Mary College, Va._

"I have perused the book with much pleasure, and find it a
most admirable work; and, to my mind, such a one as is just
now much needed in schools and colleges. * * * All the books
I have met with on chemistry are either too puerile or too
erudite, and I confess Dr. Fownes' book seems to be the
happiest medium I have seen, and admirably suited to fill up
the hiatus."

Though this work has been so recently published, it has already been
adopted as a text-book by a large number of the higher schools and
colleges throughout the country, and many of the Medical Institutions.
As a work for the upper classes in academies and the junior students
of colleges, there has been but one opinion expressed concerning it,
and it may now be considered as THE TEXT-BOOK for the Chemical
Student.

* * * * *

POPULAR SCIENCE.

KIRBY AND SPENCE'S ENTOMOLOGY, FOR POPULAR USE.

AN INTRODUCTION TO ENTOMOLOGY,

OR, ELEMENTS OF THE NATURAL HISTORY OF INSECTS; COMPRISING
AN ACCOUNT OF NOXIOUS AND USEFUL INSECTS, OF THEIR
METAMORPHOSES, FOOD, STRATAGEMS, HABITATIONS, SOCIETIES,
MOTIONS, NOISES, HYBERNATION, INSTINCT, &c., &c.

With Plates, Plain or Colored.

BY W. KIRBY, M.A., F.R.S., AND W. SPENCE, ESQ., F.R.S.

FROM THE SIXTH LONDON EDITION, WHICH WAS CORRECTED AND MUCH
ENLARGED.

In one large octavo volume, extra cloth.

"We have been greatly interested in running over the pages of this
treatise. There is scarcely, in the wide range of natural science, a
more interesting or instructive study than that of insects, or one
that is calculated to excite more curiosity or wonder.

"The popular form of letters is adopted by the authors in imparting a
knowledge of the subject, which renders the work peculiarly fitted for
our district school libraries, which are open to all ages and
classes."--_Hunt's Merchants' Magazine._

* * * * *

JOHNSON AND LANDRETH ON FRUIT, KITCHEN, AND FLOWER GARDENING.

A DICTIONARY OF MODERN GARDENING,

BY GEORGE WILLIAM JOHNSON, ESQ.
Author of the "Principles of Practical Gardening," "The
Gardener's Almanac," &c.

WITH ONE HUNDRED AND EIGHTY WOOD-CUTS.

EDITED, WITH NUMEROUS ADDITIONS, BY DAVID LANDRETH, OF
PHILADELPHIA.

In one large royal duodecimo volume, extra cloth, of nearly
Six Hundred and Fifty dou