Seientifie Publications. 
DIFFERENT FORMS OF FLOWERS ON PLANTS OF THE SAME 
SPECIES. By Cartes Darwin, LL.D., F.R.S. With Illustrations. 
12mo. Cloth, $1.50. 
THE POWER OF MOVEMENT IN PLANTS. By Cuar.zs Darwin, 
LL.D., F.R.S., assisted by Francis DARWIN. With Illustrations. 12mo. 
Cloth, $2.00. 
FORMATION OF VEGETABLE MOULD THROUGH THE AC- 
TION OF WORMS, with Observations on their Habits. By 
CuaR.Les Darwin, LL. D., F.R.S. LIZlustrated. 12mo. Cloth, $1.50. 
“The main purpose of the work is to point out the share which worms have 
taken in the formation of the layer of vegetable mould which covers the whole 
surface of the land in every moderately humid country. Aji lovers of nature will 
unite in thanking Mr. Darwin for the new and interesting light he has thrown 
upon a subject sv long overlooked, yet so full of interest and instruction, as the 
structure and the labors of the earth-worm.’’—Saturday Heview. 
FUNGI: Their Nature and Uses. By M.C. Cocke. Edited by the Rev. 
M. J. BERKELEY. 12mo. Cloth, $1.50. 
“Even if the name of the author of this work were not deservedly eminent, 
that of the editor, who has long stood at the head of the Britis tunvologists, 
would be a sufficient voucher for the accuracy of one of the best botanical mono- 
graphs ever issued from the press.’—New York World. 
DESCRIPTIVE BOTANY. A Practical Guide to the Classification of Plants, 
with a Popular Flora. By Extza A. Youmans. 12mo. Cloth, $1.50. 
FIRST BOOK OF BOTANY. Designed to Cultivate the Observing Pow- 
ers of Children. By Exiza A. Youmans. 12mo. Cloth, 85 cents. 
SECOND BOOK OF BOTANY. A Guide to the Study and Observation of 
Plants. By Extza A. Youmans. 12mo. Cloth, $1 30. 
HENSLOW’S BOTANICAL CHARTS, adapted for Use in the 
United States. By Exiza A. Youmans. Six in set, handsomely colored. 
Per set, $15.75. Key to the same, 25 cents. 
Tn the plan of illustration adopted, the plant is first represented in its natural 
size and colors; then a magnified section of its flowers is given, showing the 
relations of the parts to each other, and also magnified views of the different 
floral organs. The charts contain nearly five hundred figures colored to the life, 
and which represent twenty-four orders and more than forty species of plants, 
showing a great variety of forms and structures of leaf, stem, root, flower, fruit, 
and seed. They can be used with any botanical text-book, and shouid be upon 
the walls of every school-roum where botany is studied. 
BOTANY. By SirJ.D. Hoover, F.R.S. Flexible cloth, 45 cents. 
New York: D, APPLETON & CO., 1, 3, & 5 Bond Street, 
