10 Part I. Chapter r. 
Structure, Qualities, and Uses 1885 and Report on the Forests of North America, 
issued as a volume of the Tenth Census of the United States in 1884 with 
numerous maps. In Rhodora (1903), the organ of the New England Botanical 
Club, Prof. SARGENT has contributed a series of five articles on Recently Re- 
cognized Species of Crataegus in Eastern Canada and New England: Aside 
from Prof. Sargent’s Silva, perhaps his most valuable work, is his Manual of 
the Trees of North America (exclusive of Mexico) a book of 826 pages, issued 
in 1905. 
New England botany has been enriched also by the contributions of B.L. 
ROBINSON, M. L. FERNALD and JEsSE M. GREENMAN, who have done much 
to make the flora of the region known, beside working upon the collection of 
Mexican and Central American plants forwarded to the Gray Herbarium by 
CYRUS G. PRINGLE and other botanists for identification. 
Mention has not been made of the collectors, who have done so much 
to forward our knowledge of New England plants. The vegetation of the 
White Mountains has been investigated by Epwin FAxon, C. H. HITCHCOCcK, 
CYRUS G. PRINGLE, FULLER, ENDICOTT, HUNT and Davis, J. W. CHICKERING, 
W. G. FARLOw and B. F. ROBINSON. FREDERICK W. BATCHELDER has printed 
a Preliminary List of Plants growing without Cultivation in the Vicinity of 
Manchester, New Hampshire 1899. Our knowledge of the flora of Mt. Katahdin 
is due to the efforts of J. W. BAILEY, F. LAMSON-SCRIBNER, CHARLES E. HAMLIN, 
GEORGE R. KENNEDY, MERRITT L. FERNALD, J. FRANKLIN COLLINS, EMILE 
F. WILLIAMS, JOSEPH R. CHURCHILL, J. W. HARSHBERGER, LE Roy H. HARVEY 
and GEORGE THURBER. WILLIAM GILSON FARLOW has contributed articles to 
various scientific journals on the fungi of the region and other botanists have 
furnished articles which are now counted by the hundreds. An enumeration 
of the various papers that have appeared is given by MARY A. Day in Rhodora 
under the caption the Local Floras of New England, and these series of articles 
must be referred to, as also a List of State and Local Floras of the United 
States and British America by N. L. BRITTON in the Annals of the New York 
Academy of Sciences 1890 page 237 to 300, for bibliographic details. 
Early in his botanic work, about 1835, Dr. Asa GRAY began his her- 
barium‘). His own collecting was largely done in the lake-region of western 
central New York, the Southern Alleghanies, the central Rocky Mountains, 
Mexico and California. Associated with Dr. JOHN TORREY from 1838 to 1843 
in the preparation of the Flora of North America. Dr. Gray received dupli- 
cate types of nearly all the plants therein described. Soon after began the 
notable series of trans-continental surveys. During this epoch extending from 
EBENONTS expedition in 1842 to the natural history survey of California, 
Dr. GRAY’s eminence in American botany attracted to him an extraordinary 
hr ah botanic material. The collections of the Pacific Exploring Expedition, 
LES WRIGHT in Texas, New Mexico, Arizona, Cuba and Nicaragua, 
1) Rhodora September 1901 page 243. Mary A. Day: III Harvard University. Gray Herbarium. 
