Henry Draper. 95 
_ Professor Draper had not published very extensively at the 
time of his death. This is the more remarkable as he was 
fond of writing, a trait no doubt inherited from his father. A 
list of his publications is appended to this notice. There can - 
be little room to doubt that had he not been cut down so ab- 
tuptly in the midst of a host of projected investigations, the 
world would have been enriched during the next twenty years 
with a wealth of discovery almost unparalleled. 
Looked at from any stand-point, the death of such a man as 
Henry Draper cannot be viewed but as a calamity. At the 
age of 45 years, with very many years of good work apparently 
before him, with the experience and learning of the twenty 
years past added to a rich and varied natural endowment, giv- 
no wonder that the world of science mourns his departure. 
Moreover he seemed to be just ready for his life-work. He had 
wife who always acted as his assistant, and to whose skilled 
hand and thoroughly trained eye he has attributed much of 
List or Henry Draper’s OriGINAL Papers. 
oe On the Changes of Blood Cells in the Spleen. ew York 
ournal of Medicine, Il, v, 182-189, Sept., 1858. 
I 2. On a new Method of Darkening Collodion Negatives. Am. 
- Phot., Ul, i, 374-376, May, 1859. 
a Ona Reflecting Telescope for Celestial Photography. Rep. 
rit. Assoc., 1860, II, 63-64. 
