TEXT-BOOKS OF SCIENCE 
3 
CHEMISTRY 
HOOKER’S CHEMISTRY 
Chemistry. By Worthington Hooker, M.D. pp. 430. 
Numerous Illustrations. New Edition, Revised and Enlarged. 
12 mo, Half Leather, 90 cents. 
Dr. Hooker is so well known as a 
successful writer of books for the young 
that every one expects his books to be 
of the very best kind. His style is clear, 
lively, and free from technicalities; his 
method natural, and his illustrations apt, 
striking, and drawn from familiar sources. 
I think his books, in the hands of com¬ 
petent teachers, will do much to advance 
the cause of true education.—Rev. Will¬ 
iam Htttouinson, Principal of Lawrence 
Academy, Groton, Mass. 
GEOLOGY 
HOOKER’S MINERALOGY AND GEOLOGY 
Mineralogy and Geology. By Worthington Hooker, M.D. 
pp. 360. Numerous Illustrations. 12mo, Half Leather, 90 cts. 
LYELL’S GEOLOGY (Student’s Series) 
The Student’s Elements of Geology. By Sir Charles Lyell, 
Bart., F.R.S. pp. 640. Copiously Illustrated. 12mo, 
Cloth, $1 25. 
Notwithstanding the difficulty of reconciling brevity with the copiousness 
of illustration demanded by those who have not yet mastered the rudiments 
of the science, I have endeavored to abridge the work so as to place it within 
the reach of many to whom it was before inaccessible .—Extract from the 
Preface. 
HERRICK’S EARTH IN PAST AGES 
The Earth in Past Ages. A Geology for Young People. By 
Sophie Bledsoe Herrick. Richly Illustrated, pp. 208. 
Square 12mo, Cloth, 60 cents. 
The author’s purpose and the scope of this book are well expressed in the 
New York Times , which said in its review: “ Beginning with the clews found 
in the rocks, the action of water, fire, and ice on the surface of the earth is 
clearly explained. It is perfectly natural to direct a child’s attention to 
these subjects; and such subjects, treated as they are in this book, must be 
even more awe-inspiring to young people than are the wonderful fairy tales 
in which all delight.” 
