( 2284 ) 
if therefhali not be enough fpccifically to diftinguifli ihcm, 
and hinder them from being fampled by any thing of the 
fpoilsof the Sea or frefli waters or the land-fnails, my argu- 
ment will fall/ and 1 fliall be happily convinced of an Er- 
rour. 
Another Letter , written of the fame Gentleman , from York 
Sept. 13. 167 1 ♦ enlarginghu former Commum cations mJSJwhb. 
75* about V^gtidhlc Excrefccncies , and Ichneumon- 
Worms. 
SIR, 
IN my laft Paper khouvVegetahle Excrefcencies^ I was wholly 
filent of the opinion, which MrJVi/loughby is pleafed to fa- 
vour 5 and becauf'e that worthy Gentleman hath fo far made it 
probable, that now it feems only to depend upon the good 
fortune of feme lucky Obferver, I am willing to reaffume my 
former tlioughtSj that all thofe odd ObfervationSj we have 
made of xht Births oi J chneumom^ <lo but beget in me a ftrong 
belief, that they have a way yet unheeded, whereby they do as 
boldly, asfubtiy, convey their Eggs within the Bodies of In- 
fects and parts oi Vegetables. 
Aiiftband laft propofition of that Paper was,that the 72^^,- 
fance of majiy Vegetable Exert fcencies [eemednotto be 
See Xumif. the food of the worms to be founi in them. My mean- 
jjjg ^aSj that the fubftance of the Vegetable Ex- 
crefcencies in which thofe Ichneumon worms were 
to be found^was rather augmented, than diminilhed or worms 
eaten. And the like conformity of their feeding withio In- 
fers is well cbferved by Mr. Willoughby that 
"^ Seenhme in the imprseguaced Caterpillars feem not to be con* 
shisveryTraS. cerned^ though their bodies are full of Infed:s of 
a quite different kind, but go on as far as they 
may towards the atchievement of the perfection of their 
own fpecies* Thus I have feen a Poppy-head fwoln to a mon- 
ftrous bulk, and yet all the Cells were not receptacles oi Ich- 
neumons, but fome had good and ripe feed in theni> I fliall 
not refufe Mr. Willoughby ( though you know upon what 
. grounds 
