( 837 ) Numk^i. 
PHILOSOPHICAL 
TRANSACTIONS. 
Monday, Becemb. 14. 1668. 
The Contents. 
The Defcription of a way, (aid to be New and Univerfal, for work- 
ing Convex Spherical Glafies upon a Plain, for all practicable 
Lengths, without other Difhes^or concave Moulds. T wo Extracts 
out of the Italian Giornale de Letterati^ the one y about tm 
Experiments of the Transfufion of Blood, made in Italy, the 
other, concerning a Microfcope of a New fafhion, dif covering . 
Animals leffer than any feen hitherto. An Account of two 
Books : I A CONTINUATION of NEW EXPERIMENTS 
-Phyftco- Mechanic al y touching the SPRING and WEIGHT of 
- the AIR , and their effeffs , by the Honorable ROBERT 
BOYLE, Oxford, 1669 in 4 0 . IT. HTDR 0 LOG I A 
C H T MI C A) &c. by W. SYMPS ON. London, 1669, 
The Defer ip t ion 
Of a Way ) faid to be New and' Univerfal for working Convex 
Spherical Glaffe upon a Vhln^ for all practicable Lengths 7 
without other Difhes or concave Moulds, 
v I A His Defcription is found in an Italian Book entitled VoC- 
I CHI ALE all OCCHlOy overo DI0PTRIC A^PRATTIC A 
del Carlo Ant. MANCINI in Bologna 1 660. in 4°, which 
coming not into thefe parts,at leaft not to our knowledg 5 till now, 
could not be fooner taken notice of. It treats of Light-, of the 
Refra&ion of Ray's 5 of the Eye and the Sight and alfo of the 
confiderable Helps that may be afforded to the Eye., to make it 
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