[ 9 ^ 
214-5 Teucrlum foliis ovatis acute inclfoferratis gla- 
bris, floribus axillaribus geminiscaule, eredto. 
Linn. Sp. plant. 790. 
2146 Tithymalus Linarias tolio, lunato flore. Mor. 
H. Reg. Blefi 
2147. Valeriana fylveftris major altera, fol. lucido. 
H. Reg. Par. 
2148. Veratrum racemo compolito, corollis paten- 
tiffimis. Linn. Sp. plant. 1479. 
2149 Veronica racernis lateralibus, foliis linear! lan- 
ceolatis pinnato dentatis. Linn. Sp. plant. , 
2150 Volkameria ramis inermibus. Linn.Zeyl. 23 1. 
XVI. A Courfe of Experhnents to afcertain 
the Specific Buoyancy of Cork in different 
Waters : The refpeBive W eights and Buoy- 
ancy of Salt Water 'and Freff Water : 
And for determming the exaSi Weight of 
Huma?2 and other Bodies in Fluids. By 
John AVilkinron, M. D. F. R. S, of 
London and Gottingen. 
[Experiments to determine the Specific Buoyancy of 
Cork in River Wateri\ 
Experiment I. 
Read March 14, ^ I X cubes of good cork, every one 
«/6s* meafuring an inch fquare, as nearly 
as they could poffibly be afcertained, with a gra- 
duated 
