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Body. The Pain has not been always equally lharp, but 
he fays, that the firfl: time he loft the Ufe of his Breath 
for fome Moments ; and he then felt fo intenfe a Pain 
all along his right Arm, that he at firfl apprehended 
ill Confequences from it ; tho’ it foon after went 
off without Inconvenience. 
It is to be remarked, that in this Experiment he 
flood limply upon the Floor, and not upon the Cakes 
of Refin. It does not fucceed with all Glaffes ; and 
tho' he has tried feveral, he has had perfedl Succefs 
with none but thofe of Bohemia. He has tried 
Englijh Glaffes without any Effect. That Glafswith 
which it belt fucceeded was a Beer Glafs. 
Mr. Mufchenbroeck the Profeffor has repeated his 
Experiment, holding in his Hand a hollow Bowl 
exceeding thin, full of Water; and he fays he expe- 
rienced a moft terrible Pain. He fays, the Glafs 
mull not be at all wet on the Outfide. 
XII. A Letter from Mr. John Hill, Apothe- 
cary, to the Prefident, concerning the 
Manner of the Seeding of Modes ; and in 
particular of the Hypnum terreftre, 
trichoides, luteovirenus, vulgare, majus, 
capitulis eretdis. Raii Synopf. Ed. 3. 
pag. 84. 
SIR, 
Head Feb. 13. i745' 6 - r | “'H E many late Difcoveries of 
with Alterations. the Seeds of Vegetables (for- 
merly fuppofed to produce none) have opened a 
Way 
