THE PROGRESS OF SCIENCE 
207 

CHARLES ABIATHAR WHITE. 
chemist and a physicist, was born in Professor Barker was an admirable 
1835 and graduated from Yale in 1858 | 
and later in medicine from the Albany 
Medical School. He held various posi- 
tions, including the chair of physiolog- | 
ical chemistry at Yale until 1873, when 
he became professor of physics at the 
University of Pennsylvania, and for 
thirty-seven years, latterly as _ pro- 
fessor emeritus, held a leading position 
in the university, when Philadelphia 
had a more dominant position in sci- 
ence than it has been able to maintain. 
lecturer and the author of widely-used 
text-books of chemistry and _ physics; 
he served as expert in important legal 
research 
He was elected 
cases and carried forward 
work of consequence. 
to the National Academy in 1876 and 
was president of the American Asso- 
ciation for the Advancement of Science 
in 1879. 
General Comstock, born in 1831, 
West Point in 1855 
and taught physics in the academy. 
graduated from 
