( 4^7 > 
PHILOSOPHfCAL 
TRANSACTIONS. 
J 1 
'December 27. 1675. 
The CONTENTS. 
Hen New BxperimentSy made And com?num6 ate ^ hy> the Honourable 
Robert Boyle £/^»^r^, about the Weakmd Spring and [ome Un- 
obfervd Effects of the j4ir: Where occurr not only fever alTry- 
ds to difcover^ whether the ?>pr\v\g of the h^w^ as it may divers 
vpayes increafed, fo may not by other tvayes than Cold or Dila- 
tation be weaken'd ; but alfo feme odd Experiments to Jbew the 
Change of Colors producible in feme Solutions and Precipitations 
by the Operation of the Air. Some Experiments made in the 
Air- pump «/i?;^ Plants ; dirtSfedandtryed by the fame per fens ^ 
mention d in Numb, r 1 9. An Account of fome Books^t I. Francifei 
WiWw^htW de Midkt on Armigeriy e Reg. Societate., OKNl- 
7H0L0GI<L/E Libri tres,&c^ If* The Comparative Anatomy 
of thetRUISfCKS of Plants^ together with an Account of their 
VEGETATION groundedf hereupon, by Nebemiah Grew M. D. 
and Fellow of the R. Society. III. The ROXAL JLMA^ 
NACK^ &c, by N. Stevenfon, one of his Majejlies Gunners. . 
New Experiments about the weaken d Spring and fome un-obfer^'d 
Effects of the Jir : Made and communicated by the Honourable 
Robert Boyle £/2'. 
' A S for the not yet communicated Tryals that I made in 
,/~\ profecuting my Dtfign of difcovering or obferving 
fome latent Qualities of the/^/r, I will not deny you fome of them, 
as imperfcd as chey yet are. but will venture to fend them you , as 
my Notes or my Memory fuggefts them ro me ; not only, becauft 
without being compleated they may be fit enough to countenance 
P p p fujpicions 
