1880 .] 
47 
[Lyman. 
have clone ; one supplemented the other. To them together 
belongs the great honor of having served humanity to a degree 
beyond what language can express, and yet because of lack of 
concert the ungrateful world has refused due acknowledgment to 
both, and allowed them to pass away from earth feeling, as long 
as they felt at all on the subject, the great injustice done them ; 
their last conscious moments embittered by the thought that in 
giving a great boon to man they brought upon themselves only 
disappointment and suffering. 
Dr. Jackson died on the 29th of August last, after an illness of 
the mind which had confined him for several years. 
It was voted to print Mr. Bouve’s remarks in the Proceedings, 
and to request notices of Count Pourtales, Mr. Burbank and 
Mr. Smith, from Col. Lyman, Mr. Crosby, and Mr. Orne, for 
publication. 
LOUIS F. DE POURTALES. 
Like all new countries, America has drawn skilled workmen 
from Europe. Natural science is no exception to this rule, and 
owes much to the aid of foreigners, among whom no one has been 
more welcome to these shores, and few have done more for 
sound learning, than Count Pourtales. He came to the United 
States when only twenty-three years old, with Louis Agassiz, and 
assisted him in his researches. Six years before, he had been with 
Agassiz on the glacier of the Aar, and doubtless there acquired 
the deep love of scientific investigation which grew with his life. 
At that time he aided his friend and master not only in zoolog- 
ical studies, but also in the preparation of the little manual of 
natural history, published by Agassiz and Gould, a most original 
book, and one which may profitably be read at the present day. 
Young Pourtales could not long pursue his favorite theme. He 
had his own way to make, and, in 1848, he obtained a position 
on the Coast Survey, in which service he remained more than 
twenty years. His powers were early recognized by the govern- 
ment, and he was assigned to duties requiring especial skill and 
knowledge. From 1854 he had charge of the Tidal Division, 
