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XXIII. El Eetter from Air. Chriftopher 
Gullet to Matthew Maty, M. D. Sec. 
R. S. on the Effe&s of Elder , in preferv- 
ing Growing Plants fro?7i InfeSls and Elies . 
Taviflock (Devon) Auguftir, 1771. 
S I R, 
Read May 14, SHOULD not prefume to trouble you 
177u as a uiember of the Royal Society 
with the following letter, did not the fubjedt feem to 
promife to be of great public utility. It relates to 
the eftedts of Elder ; 
Scmbucus jruSlu in 11m ella nigro. 
• 1 ft. In prelerving cabbage plants from being eaten 
or damaged by caterpiliers. 
2d. In preventing blights, and their eft'edtson fruit 
and other trees. 
3d. In the prefervation of crops of wheat from 
the yellows, and other deftrudtive infedts. 
4th. Alfo in faving crops of turnips from the fly, 
&c. &c. 
?ft, I was led to my firft experiments, by con- 
sidering how difagreeable and often five to our olfac- 
tory nerves the effluvia emitted by a brufh of green 
o elder 
