Record. xlix 
differences of temperatures and humidity in the city and 
in Shaw’s Garden (which was, he said, on an open prairie 
three miles from the city) Dr. Nipher concluded with the 
statements that Engelmann was continuously in co-oper- 
ation with the weather service in charge of the Smith- 
sonian Institution, and that in many ways his aid was 
solicited by government officials in charge of work in the 
far west. 
Professor Trelease, of the Missouri Botanical Garden, 
which possesses Engelmann’s invaluable collections, con- 
cluded the program with a paper on ‘‘Engelmann as a 
Biologist.’’ He showed a number of drawings which 
exhibited Engelmann’s skill in picturing details of plant 
structure, among them those made for his thesis, which 
was published in 1828, as well as the large quarto volume 
in which his botanical publications were reprinted at the 
expense of Henry Shaw in 1887, under the editorial direc- 
tion of the great botanist, Asa Gray of Harvard Univer- 
sity. To these were joined specimens of the beautiful 
prairie flower named Engelmann in his honor, and of the 
blue spruce of Colorado, which also bears his name. 
Tersely epitomizing Engelmann’s work, and analyzing 
the economy .of time and directness of purpose which 
enabled him to accomplish in the leisure hours of a busy 
physician’s life more than the average achievement of 
a botanist whose whole effort is directed to his specialty, 
Professor Trelease closed by quoting from Engelmann’s 
gifted biographer, Professor Sargent of Harvard Uni- 
versity, the prediction that the western plains will still 
. be bright with the yellow rays of Engelmannia, and that 
the splendid spruce will still cover with noble forests 
the highest slopes of the Rocky Mountains, recalling to 
men, as long as the study of botany will occupy their 
thought, the memory of a pure, upright, laborious and 
stimulating life. | 
At the conclusion of the memorial session, the mem- 
bers and guests of the Academy were invited to pass into 
another room, where were displayed a number of inter- 
esting objects connected with or commemorative of En- 
gelmann’s life and work. Under the guidance of Mr. 
H. C. Irish and Mr. Charles H. Thompson, who explained 
