( 179 ) 
were compounded of fuch fmall parts as lines could be drawn up- 
on a globe* And I found all thefe particles to confifi: of cryftalHn 
globuls. Two or three fmall pieces of this Cryftallin body I have 
fixed lo feveral pins of my Microfcopes, which I have laid by, to 
ftew them to the Carious upon occalion ; not being fatisfied to fee 
f.ch things my felf alone, but very willing to preftnt others with 
the fame view ; although I have already found more than once,thac 
fome have made their particu'ar advantage by it. 
I>c* Swdmmerdamhzth again within this fort-night vifited me 
twice,accompanied with aGentleman,to both which^I have fhew'd 
many of thefe Microfcopical Obfervations, and of fuch others as I 
had formerly fpoken to him about ; perceiving, that hisfpeculati- 
ons are bufy upon this fubjeft, and that probably he will difcourfe 
more largely of it than 1 have done hitherto. 
. To proceed ; having view'd the Vitreom humor , lying deeper 
in the Eye, I £di\s:mmy ^^jr^* globuls than in the ^^^ecus which I 
took out from the top of the Eye, 
The tranfparent CVr^<?^, after I had let it dry for feveral days, I 
vlew'dalfo, and found it likewife to confift of crydallin globuls ^ 
and endeavouring to fever the faid tunicle in its thicknefs, I found 
the globuls thereof uni ted fo clofe and compaft,that the fame feenf d 
to conftft of manifold finewy particles, croffing one another : And 
how curioufly foever I have hitherto endeavoured to view fome of 
the Scaly parts, yet I have not yet fatisfied my felf therein ; I ob- 
ferv*d only fome ftreaks refembling the fears of a newly whetted 
rafor. Mean time it feem'd^ that this membrane w^ouid fufFer fe- 
paration w^hen 'tis moift» 
I formerly wro?:e to you, that till then I had obferv'd, that all 
tranfparent and fuch partlc!es,as lye upon one another,appear'd ro 
our Eye white; The fame lobferve in the above-mention'd Cry- 
fiallin liquor w^hen dryed bard and then beaten to pieces: But when 
'tismoift, 'tis then not white. 
In the fecondT'amclQ of the Eye, there appeared divers very fine 
glittering c^;Iours, and it was black, and confided alfo of globuls, 
and viev/ing the fingle globuls, I found'rheni dark ; and paflbg my 
finger ovsr this coloured memb^ne , and the fame being grown 
dry, the colours were gone, and cht membrane w^as darker. 
■ The ^^/V^Tunicie, was exceedii\g thin and teader , and havins; 
viewed it, I found it alfo to confiflrof globuls united. 
I communicated thefe Obfervations toDt^^c?/- Schrr^vefa^de^aud 
fhew'd him the Cryftallin humor 5 and he mentioning, that fome A- 
A'dz natomifis 
