S66 THE STORY OF A BIRD LOVER 



best but striving. Patience combined with some 

 of the requirements spoken of above may accom- 

 plish much in ^zme. Here I feel that I must call 

 attention to this vital element in the solution of 

 many of the problems. The consideration of time 

 must be eliminated. The work must be continu- 

 ous ; the problem undertaken must be persevered 

 in. The short period of an ordinary human life 

 will prove inadequate to the completion. Such 

 work should be laid down on lines so carefully con- 

 sidered, and so well provided for, that the experi- 

 ment shall not depend on a single investigator, but 

 rather on generations of investigators working to 

 the same end. A properly equipped laboratory 

 must therefore include, as one of its chief requisites, 

 a staff of several investigators, preferably each of a 

 different generation, so that the possibility of the 

 interference with the continuity of experimenta- 

 tion shall be minimized. The performance must 

 go on as advertised ; it must be continuous ; 

 there must be under-studies ; for the audience 

 that awaits the production of results must not be 

 disappointed. All this has been admirably stated 

 by Professor C. O. Whitman in an essay dealing 

 with the subject, and I find that the words he uses, 

 " continuity and control," more adequately express 

 what is desirable than any paraphrase. 



I think I have expressed definitely what " con- 

 tinuity " means ; '' control " is more obvious, It 



