_Journal of Botany._--"Mr Jackson has supplied what was wanting."

_Nature._--"Exceedingly valuable."

_Science Gossip._--"No botanist can afford to dispense with this
work."

_PERCIVAL, JOHN._

=Agricultural Botany: Theoretical and Practical.= By JOHN PERCIVAL,
M.A., F.L.S., Professor of Botany at the South-Eastern Agricultural
College, Wye. Crown 8vo, with 265 Illustrations by the Author. 7_s._
6_d._ net.

_Second Edition. Ready now._

Incorporated in the text are 265 illustrations, and over three
hundred experiments, which specially enhance the value of the book
for schools and colleges where botany, agriculture, and
horticulture are taught.

_Nature._--"We have no hesitation in recommending it as _the_
elementary handbook for the agricultural student. The chapters on
weeds and on diseases of farm-plants are distinctly better than
those in any previous English works dealing with agricultural
botany."

_Journal of Education._--"A book which supplies what has for a long
time been felt as a serious want in the literature of agricultural
textbooks.... The book could hardly have been better."

_MASSEE, GEORGE._

=A Text-Book of Plant Diseases=, caused by Cryptogamic Parasites. By
GEORGE MASSEE, F.L.S., Mycologist and Principal Assistant, Royal
Herbarium, Kew. With 92 Illustrations, drawn from Nature by the Author.
Crown 8vo. 5_s._ net.

_Literature._--"The book deserves to become the leading English
textbook on the subject."

_Farmers' Gazette._--"The manual which Messrs Duckworth have so
attractively brought out for Mr Massee is one of the best of its
kind that has yet appeared."

_MOYLE ROGERS, THE REV. W._

=A Hand-book of British Rubi.= By the Rev. W. MOYLE ROGERS, F.L.S. Demy
8vo. 5_s._ net.

DUCKWORTH & CO.
3 HENRIETTA STREET, COVENT GARDEN.

Transcriber's Notes.

The printer used raised dots for the decimal point; they were changed to
periods.

The dagger symbol was used in the keys; I changed them to the plus sign.

There are many inconsistencies in the way words are abbreviated, the
hyphenation, the Latin word endings and the capitalization of names, as
well as the spelling in general; except where noted below, I left them
as is.

Changed "subq." to "subg." on page 11: "sp. subg. 6-7."

Changed comma to period after "rufous" on page 23: "p. tinged rufous."

C