142 NATIONAL ACADEMY OF SCIENCES 
From the beginning of his botanical work, Dr. Gray believed 
that the description and classification of the flowering plants was 
of the utmost importance and after thirty-five years spent in the 
development of this branch of botany he could safely be said to 
stand at the head of American systematists, and ranked with the 
great botanists of the world. His ‘“ Botanical Text-book,” 
‘““Manual of the Botany of the Northern United States,” and 
“How Plants Grow,” and “ How plants Behave” have been of 
inestimable value to American students of botany. He died on 
January 30, 1888. 
(From W. G. Fartow, in Biographical Memoirs of the National Academy of 
Sciences, vol. 3, 1895, pp. 161-175. See also the biographical sketches in the 
“Memorial of Asa Gray,” published by the American Academy of Arts and 
Sciences, 1888, and by James D. Dana, in Amer. Journ. Sci., ser. 3, vol. 35, 
1888, pp. 181-203.) 
ARNOLD GUYOT 
Born, September 28, 1807; died, February 8, 1884 
Guyot was descended from one of the Protestant families 
which settled in Neuchatel after the revocation of the edict of 
Nantes, and was born at Boudevilliers on September 28, 1807. 
He was named after the Swiss patriot Arnold von Winkelried. 
His boyhood was passed at Hauterive, and from his home there 
he had glorious views of the Bernese Oberland, the Jungfrau, 
the Schreckhorn, and other mountain peaks, which must have 
helped to inspire in him the love of nature which he manifested 
early in life. 
Young Guyot’s first school days were spent at La Chaux-de- 
Fonds, a village “ at the foot of a narrow and savage gorge of the 
Jura,” 3,070 feet above the sea. At the age of 14 he entered the 
College of Neuchatel, where he pursued classical studies and 
also formed a friendship with Leo Lesquereux, the botanist, 
which lasted throughout his life. In 1825 Guyot went to Ger- 
many to complete his education. He spent some months at 
Metzingen, and later at Carlsruhe in the family of Mr. Braun, 
the father of Alexander Braun, the distinguished botanist and 
