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 



