( 999 ) 
There are in Virginia a great many Cormorants ; fe- 
veral forts of Gulls, and in about the Bay many Ban- 
nets. 
Thus much for the Birds. 
Tours, &e. 
II. Some Queries concerning the Nature of Light, 
and Diaphanous Bodies. Fropofed to the 
Royal Society by E. Halley. 
THE late Curious Book of Mx.Hugens having revi- 
ved theDifquifitions that have formerly been made 
about the Nature and Phenomena of Light, I thought 
it not amifs to propofe fome Difficulties that have oc- 
curred to my Thoughts upon this Subjedt, by way of 
Query : Which may perhaps not feem unworthy of the 
Confideration of this Honourable AlTembly, viz. 
j. In what confifts the Tranfparency of Glafs, Chry- 
ftal, Water, &c. And whether the Notion of right 
Pores be enough to anfwer all the Appearances of it, 
efpecially thofe of Refra&ion, and of the Tranfparency 
of Bodies in all Pofitions ; whereas the Re&itude of Pores 
feems to argue an orderly or regular Pofition of the 
conftituent Parts, according to the three Dimenfions 2 
2. Why in Bodies that have much more Pores than 
Glafs or Water; as Deal-fhavings or brown Paper, the 
Pailage of Light is wholly obftru&ed, though feverai 
grofs Particles will penetrate them? 
3. Whether or no the Light is eafier propagated 
through Glafs, Water, (Sc. than Air or i£ther, as Jes 
Cartes and Mr. Hook have maintained ; and wherein 
Mr. Hugens differs from them, aflerting that the Beams 
of 
