/i °our&c, u. is work can oe dons only if my health, holds out and my 
brain woes not deterirate meanwhile, nor rny memory reaches the state 
•» ■ ^ 
of perfection wnen, as Mark Twain said, one remembers even things 
which have never happened. Being an irreligious man and a trained 
» • I* *!■ 
scientist I an sufficiently supersticeous to KNOCK ON WOOD, because 
I have seen Just that happen to some unfortunate men. 
Hoping that you are in good health and wishing you satisfaction 
in winding up your work connected with the Congo expedition, I remain 
Sincerely yours. 
Alexander Petrunkevitch 
Emeritus Professor of -Zoology 
•7 
C 
l 
h 
" 
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