pecimen illustration see page 15._

In the _Wonders of Heat_ the principal phenomena are presented as viewed
from the standpoint afforded by recent discoveries. Burning-glasses, and
the remarkable effects produced by them, are described; the relations
between heat and electricity, between heat and cold, and the comparative
effects of each, are discussed; and incidentally, interesting accounts
are given of the mode of formation of glaciers, of Montgolfier's
balloon, of Davy's safety-lamp, of the methods of glass-blowing, and of
numerous other facts in nature and processes in art dependent upon the
influence of heat. Like the other volumes of the Library of Wonders,
this is illustrated wherever the text gives an opportunity for
explanation by this method.

CRITICAL NOTICES.

"From the first page to the very last page the interest is
all-absorbing."--_Albany Evening Times_.

"The book deserves, as it will doubtless attain, a wide
circulation."--_Pittsburgh Chronicle_.

"This book is instructive and clear."--_Independent_.

"It describes and explains the wonders of heat in a manner to be clearly
understood by non-scientific readers."--_Phila. Inquirer_.

=Animal Intelligence.=

THE INTELLIGENCE OF ANIMALS, WITH ILLUSTRATIVE ANECDOTES.--From the
French of ERNEST MENAULT. With 54 illustrations. One volume, 12mo $1 50

_For specimen illustration see page 16._

In this very interesting volume there are grouped together a great
number of facts and anecdotes collected from original sources, and from
the writings of the most eminent naturalists of all countries, designed
to illustrate the manifestations of intelligence in the animal creation.
Very many novel and curious facts regarding the habits of Reptiles,
Birds, and Beasts are narrated in the most charming style, and in a way
which is sure to excite the desire of every reader for wider knowledge
of one of the most fascinating subjects in the whole range of natural
history. The grace and skill displayed in the illustrations, which are
very numerous, make the volume singularly attractive.

CRITICAL NOTICES.

"May be recommended as very entertaining."--_London Athenaeum_.

"The stories are of real value to those who take any interest in the
curious habits of animals."--_Rochester Democrat_.

=Egypt.=

EGYPT 3,300 YEARS AGO; OR, RAMESES THE GREAT. By F. DE LANOYE. With 40
illustrations. One volume, 12mo $1 50

_For specimen illustration see page 17._

Thi