1908] Wiegand,— Gray's Manual, Seventh Edition 193 
The census of New England Hepaticae now stands as follows: 
‘Total number of species recorded, 147; number recorded from 
Maine, 101; from New Hampshire, 116; from Vermont, 84; from 
Massachusetts, 82; from Rhode Island, 64; from Connecticut, 107; 
common to all six states, 43. 
YALE UNIVERSITY. 
GRAY’S MANUAL OF BOTANY, SEVENTH EDITION. 
Kart M. WIEGAND. 
PERHAPS it is not too much to say that no work has been awaited 
with so much interest by botanists as the new edition of Dr. Gray’s 
famous text-book, which is now before us. It has been a long time 
since the last edition appeared in 1890, and in this age when progress 
in scientific fields is so rapid it was inevitable that the work should 
gradually fall behind the times. A new edition brought completely 
up to date has long been promised us until to the uninitiated it has 
seemed like a truly elusive will-o-the-wisp. ‘The delay, however, was 
due solely to the very great amount of labor and time required for a 
complete revision and verification of the enormous mass of facts con- 
tained in the work. For nearly ten years the editors have been en- 
gaged at their task, and it is safe to say that the Manual has never 
before received a more critical revision. 
To the botanist who has not followed recent progress in his science, 
and who is familiar only with the Gray’s Manual of the past, this 
new edition will appear strange indeed. ‘The most striking change 
lies undoubtedly in the substitution of the newer Eichler or Engler 
and Prantl system of classification, now so generally adopted every- 
where, for the somewhat antiquated Benthamian system previously 
used. We now find the Compositae at the end of the book and the 
grasses near the beginning. ‘The older botanist will also find unfa- 
miliar the numerous text illustrations inserted on many pages of the 
work. ‘These illustrations are small in size and are intended to illus- 
trate not the whole plant but certain characters that are difficult to 
1Gray’s New Manual of Botany, 7th ed. Illustrated.— Rearranged and extensively 
revised by Prof. B. І. Robinson and Prof. M. І. Fernald of the Gray Herbarium (Har- 
vard Univ.)— American Book Co. 1908, pp. 926. 
