AMERICAN MIDLAND NATURALIST. 137 
Fig. 10. Dorsal epidermis with stomata of cotyledon;x320. 
Fig. 11. Pneumatic tissue of same; x320. 
Fig. 12. Dorsal epidermis with stomata of a leaf from a tree;x320. 
Fig. 13. Base of a long, unicellular, pointed hair of same;x320. 
Fig. 14. Glandular hair of same;x320. 
Fig. 15. Cross-section of leaf from a tree, showing a large idioblast in the 
chlorenchyma; Ep.,* ventral, Ep., dorsal epidermis; x320. 
Fig. 16. Cross-section of same leaf, showing a lateral vein with colorless 
parenchyma, stereome, and parenchyma-sheath, [P. S.); P, palisade 
tissue; the other letters as above; x320. 
Brookland, D. C. 
Book Notices. 
A NEW HISTORY OF BOTANY 
There is not yet extant in the English language any work, or 
even the beginnings of any work, that is of the nature of a history 
of botany from the earliest times down to the present. For such 
history of botany in general as we have we are indebted to the zeal 
and learning of Frenchmen and Germans of the eighteenth century 
and the early nineteenth; and these attempts are partly in French, 
partly in German, and the best of them are in Latin. 
There is now in the press in this country, and under the 
auspices of the Smithsonian Institution at Washington, the first 
volume of a work in English bearing the title of Landmarks of 
Botanical History; an enterprise undertaken by Doctor Edward L. 
Greene, an Honorary Associate of the Institution. 
The plan of this forthcoming work, as the title implies, is that 
of a careful study and plain elucidation of principal epochs in the 
development of the science from the earliest period. Such treat- 
ment of a subject as ancient as botany, having a literature so 
vast, and having undergone so many vicissitudes of advance and 
retrogression during more than two milleniums, can not by any 
possibility be reduced to the limits of a single volume, but must fill 
two or three at the least; and that which it is promised we soon 
shall see is but a first instalment, and not a very large one, of the 
Landmarks; but as replete with a great number, and much diversity 
of facts never before presented in any history of botany, that it fills 
