s a grand story of a grand life, more instructive than a sermon,
more romantic than a romance."--_Harper's Magazine._

--Any of the above sent, postpaid, on the receipt of price.

Putnams' Series of Popular Manuals.

HALF-HOURS WITH THE MICROSCOPE.

By EDWIN LANKESTER, M.D., F. R.S. Illustrated by 250 Drawings from
Nature. 12mo, cloth, $1.25.

"This beautiful little volume is a very complete manual for the amateur
microscopist. * * * The 'Half-Hours' are filled with clear and agreeable
descriptions, whilst eight plates, executed with the most beautiful
minuteness and sharpness, exhibit no less than 250 objects with the
utmost attainable distinctness."--_Critic._

HALF-HOURS WITH THE TELESCOPE:

Being a popular Guide to the Use of the Telescope as a means of
Amusement and Instruction. Adapted to inexpensive instruments. By R. A.
PROCTOR, B.A., F.R.A.S. 12mo, cloth, with illustrations on stone and
wood. Price, $1.25.

"It is crammed with starry plates on wood and stone, and among the
celestial phenomena described or figured, by far the larger number may
be profitably examined with small telescopes."--_Illustrated Times._

HALF-HOURS WITH THE STARS:

A Plain and Easy Guide to the Knowledge of the Constellations, showing
in 12 Maps, the Position of the Principal Star Groups Night after Night
throughout the Year, with introduction and a separate explanation of
each Map. True for every Year. By RICHARD A. PROCTOR, B.A., F.R.A.S.
Demy 4to. Price, $2.25.

"Nothing so well calculated to give a rapid and thorough knowledge of
the position of the stars in the firmament has ever been designed or
published hitherto. Mr. Proctor's 'Half-Hours with the Stars' will
become a text-book in all schools, and an invaluable aid to all teachers
of the young."--_Weekly Times._

MANUAL OF POPULAR PHYSIOLOGY:

Being an Attempt to Explain the Science of Life in Untechnical Language.
By HENRY LAWSON, M.D. 18mo, with 90 Illustrations. Price, $1.25.

Man's Mechanism, Life, Force, Food, Digestion, Respiration, Heat, the
Skin, the Kidneys, Nervous System, Organs of Sense, &c., &c., &c.

"Dr Lawson has succeeded in rendering his manual amusing as well as
instructive. All the great facts in human physiology are presented to
the reader successively; and either for private reading or for classes,
this manual will be found well adapted for initiating the uninformed
into the mysteries of the structure and function of their own