{6go ) 
Subjed* and therefore I (hall here conclude this Paper, as foon 
as I have added this Confirmation, as well of whit I laft related., 
as of fomething that 1 obferved before, That having included in 
fmall Receivers two pieces of rotten Whitings , whereof the cnr, 
before it was put in, fcarce (hone fo vividly, as did the other after 
the Recei ver was exhaufted 5 and having ordered the matter fo, 
that we were able to keep out the Air for fome days, at the end of 
about 48 hours we found, that the more ftrongly (hining Body 
retained yet a deal of Light. But afterwards looking upon them 
both in a dark place, we could not perceive in either any (how of 
Light. Wherefore having let in the Air into that Receiver , 
whereinto the £ody that at firft fbined the faintlier had been put, 
there did notenfue any glimmering of Light for apreiry while : 
nay, upon the luihing in of the Air into the other Glafs (then al- 
fo made acceffible to the Atmofpbere') the body that at firftffione 
fo ftrongly, and that continued to (bine fo long, (hewed no glim- 
mering of Light. i?ut being refolved to exped the iftiie a while 
longer, our patience was rewarded within lefs than a quarter of 
an hour with the fight of a manifeft Light in the Body laft named, 
and a while after the other alfo became vifible, but by a light ve- 
ry dimm. The more luminous of thefe bodies I obferved to re- 
tain fome Light 24 hours after : and the hitherto recited Experi- 
ment had thispeculiar Circumftance in it, That the two Recei - 
* mat method vtrs were uninterruptedly kept exhaufted no lefs 
i] i e xMe ju- t haa 4 days, and as many nights *. 
tboroftheftEx- 
ferments ufed in peeping cut the Mr for fo long a time,' mil probably be made ^nown 
«re long by himfelf. 
An Account of two Books* 
L PATHOLOGIC CEREBRI & NERVOSI GENERIS 
SPECIMEN: in quo agitur de MORBIS CONVULSI- 
YIS & SCORBUTO, ftudio THOMC WILLIS, M. D. 
X T THat this excellent Author formerly promifed of the whole 
V V Pathology of Brain and Nerves , he gives in this jSook a 
very confiderablc Specimen of. The knowledge of the Difeafes 
which ufe to aifed thefe parts, is efteemed very difficult and in- 
tricate, and particularly the true Caufes of Convulfms are of a 
very deep re fear ch, For the clearing them up, this Author Phi- 
lofophifeth 
