CHILDHOOD AND YOUTH 47 
young lady friends of the town and other young people, 
in the natural and appropriate amusements of his age. 
In September he visited Philadelphia and for the most 
part frequented the Academy, where he met for the first 
time some of the better known scientists of the day, 
Townsend Brydges, Dr. Samuel G. Morton® the anthro- 
pologist, and Thomas Nuttall.? On the 29th he went to 
the newly established Daguerreotype parlors and had his 
picture taken. Shortly after he returned to Carlisle. 
The application of electricity to the cure of certain 
ailments was already in vogue, and with the electric 
machine borrowed from the college he made appli- 
cations of it to several rheumatic friends. In Novem- 
ber he was experimenting with bichromate of potash 
prints, better known nowadays as “blueprints,” and 
common in every office where plans or drawings are to 
be copied. This was then a new thing and he applied 
it to taking prints of the leaves of as many trees and shrubs 
as the neighborhood afforded. This collection of prints 
many years afterward was utilized with profit by the 
paleobotanists of the National Museum for comparison 
with fossil plants. 
8 Samuel George Morton, M.D., proficient in geology and craniol- 
ogy, born in Philadelphia, Jan. 26, 1799, died May 15, 1851. He was 
one of the most influential members of the Philadelphia Academy of 
Natural Sciences and an active participant in the Lea-Conrad contro- 
versy of 1832-3. He published important contributions to the Cre- 
taceous paleontology of the United States and on human craniology. 
®' Thomas Nuttall, born in Settle, Yorkshire, in 1786, died at 
Nutgrove near Liverpool Sept. 10, 1859. He was especially a bota- 
nist, but collected in all branches of natural history. He came to the 
United States in 1808, travelled and collected extensively on the 
Pacific Coast and elsewhere and succeeded Peck in charge of the 
botanical garden at Cambridge, Mass., in 1822; in 1842 he returned 
to England. 
