348 THE AMERICAN NATURALIST.  [Vou. XXXIII. 
ordinary people cannot separate. The illustrations are well chosen 
and, for the most part, excellent. Many of them are photo-engraved 
from drawings copied from classical figures, the source of which, 
unfortunately, is somewhat obscured by the statement that they are 
original. See: 
Sargent’s Silva.!— When it was begun, this superb work was 
intended to be completed in twelve volumes. The twelfth volume, 
however, recently issued, contains an announcement that a thirteenth 
volume will be devoted to supplementary material and an index to 
the entire work. Like its predecessors, the present volume is conserv- 
atively prepared and exquisitely published. It deals with the genera 
Larix, Picea, Tsuga, Pseudotsuga, and Abies. 2 
whose studies on 
the anatomy of flowering plants as applied to their classification 
are known to all botanists, has undertaken the preparation of a 
synopsis of what is known in this respect of the Dicotyledons.* The 
work is to be completed in four parts, and, though somewhat expen- 
sive (36 marks), will be a necessary and welcome addition to every 
working laboratory. sN 
Botanical Notes. — The relation of plants to their surroundings is 
discussed in an entertaining way by Costantin, in a recent volume of 
the Bibliotheque Scientifique Internationale. 
The anatomical means of distinguishing the commonly cultivated 
barberries are given by Koehne in Gartenflora for January. 
Systematic plant introduction, its purposes and methods, is dis- 
cussed by D. G. Fairchild in Forestry Bulletin No. 2r of the Depart- 
ment of Agriculture. 
A series of illustrated articles on the morphology of Anemone, by 
Janczewski, is brought to a conclusion in the Revue Générale de 
Botanique for December 15. 
Orchid hybridizing, now a matter of some commercial importance, 
as well as of scientific interest, is described by C. C. Hurst in Mature 
for December 22. 
1 Sargent, Charles Sprague. The Silva of North America. Mlustrated with 
figures and analyses drawn from nature by Charles Edward Faxon. Boston and 
New York, Houghton, Mifflin & Co. Vol. xii. vii + 144 pp., 26 plates. 
2 Solereder, H. Systematische Anatomie der Dicotyledonen. Ein Handbuch 
fiir Laboratorien der wissenschaftlichen und angewandten Botanik. Stuttgart, 
Enke. Lieferung 1, 2. 1898. 
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