LIFE IN WASHINGTON 237 
ment Survey or Expedition, there should be as many 
competent collectors as possible, and he gave his earnest 
supervision to the preparation of collecting outfits, and 
also to preparing instructions for the collectors. Some 
of these were themselves scientific men, appointed to 
the special task of making collections. Others were men, 
equally fitted by previous study, but going with the expe- 
ditions in some other capacity, though with the under- 
standing that collections were to be made by them. 
Others were entirely new to the business, but undertook, 
with the co-operation of the heads of the Survey, to do 
all that they could incidentally in the way of collecting. 
I have a large number of accounts, with vouchers attached, 
of the expenditures made with the sums allotted by the 
Surveys to this purpose. No bride ever devoted more 
thought and attention to her trousseau than did my 
father to the fitting out of each of these explorers, and 
he watched the progress of each missionary with anxious 
personal interest. The reward of his labors came in the 
enormous collections sent in, sometimes more than could 
easily be handled with the force then available in the 
Museum. The route of each expedition was studied by 
my father, and it used to be a source of amusement 
among his friends to note the exact geographical knowl- 
edge which he gained by investigation and correspondence. 
It seemed sometimes as if he knew as much of the ground 
as if he had traversed it himself. 
“Another source from which the collections were 
derived was the various officers of the Army who became 
interested in the matter. With these, too, he kept up 
an active correspondence, furnishing them with such 
apparatus as they needed. Many of the army surgeons 
were especially interested, and in more than one case 
