

SIXTEENTH ANNUAL REPORT OF THE DIRECTOR. 25 



third edition, of 2,550 copies, again revised, has been 



printed. 



The appended diagram (F) shows graphically the sales 



oin 



and though the number of sales in 1904 was undoubtedly 



mor 



edition, this diagram once more emphasizes the unusual 

 number of persons who have this year visited the Garden 

 for the first time. On it is also shown by another curve 

 the ratio of Handbook sales to the total number of visitors 

 since 1898, when the latter were first counted, this aver- 

 ao-ino- .246 of 1 per cent, prior to this year, reaching its 



minimum (.16 of 1 percent) in 1902, when the number of 

 local sight-seers was unusually great, and in 1904 amount- 

 in^ to 1.51 per cent, of the entire number of visitors. 



RESEARCH AND USE OF FACILITIES. 



Owing to the presence at the Exposition of a large num- 

 ber of persons interested in botany and floriculture, the 

 Garden collections have been used for study to an excep- 

 tional extent this year, and every possible courtesy has 

 been extended to visiting botanists, several of whom in 



\ 



return have given valuable assistance in naming plants with 

 which they were familiar and by suggestions as to the care 

 of difficult groups. It has been particularly gratifying to 

 observe through the year an unusually large number of 

 persons going through the Garden with care, note-book in 



hand. 



The chemical laboratory reported a year ago as being 



equipped for the use of Mr. J. B. Nagelvoort, a distin- 

 guished student of the chemistry of plants, as a result of 

 his death in March last has been turned to other purposes 

 appropriate to the research plans of the founder of the 



Garden, partly in connection with the timber studies 



bein^ carried on under Dr. von Schrenk for the United 



