(21^5) 
troubleany of the longeft Tubes, then thofe fliort ones of his 
contrivance^of which he faith he hath given the grounds in this 
Trail; Wherein he affirms he delivers an HypotheJs.whQVQhy the ' 
Nature ^nd Manner of Vifion is fo clearly and diftiodily exhibited, 
that no Ph£nomenon fliali occur which may not be readily ex-* 
plained thereby 5 aCTuming to this end the raofl fignal Experi^ 
ments and Geometrical reafons 5 and explicating wichall fome 
ph£nomena^CQnduc\v^ to the fame ^ as of FirmnelS; Fluidity, Re- 
fraitioDjflefleilion^Lucidity^Tranrparency, Opacityj Colors, 
and the Parts of the Eye: In the doing of which be inferts this 
generous and candid Paragraph^ P^'^g- ?• 
Mijjis iliis occultis qualitatiius (d^ jimtlihus^nunquAm a qnoquam 
revelandis^eorum rhilofophorum modum ft({ui magis arruJet^ qui Re* 
giam viam^defertis dumetis fpinis^calcarc ma nnt^ex clarh di- 
iiinQis principiis exordium capeJJendo^atq-^ExperimentisRaiiQcinia^ 
in rebus prdfertim Vhsficis^confirmandojn auxiUum vvcatis Geoms- 
trarum demonftrationiLu '^adnormam Regime indalis^ Societatis An* 
g!ican£ ; quorum in fiitutum Ji a. duceniis jam ficu'is profecuium fu^ 
jjjit Genus humanum^ & arnica conjpiratione eorum vtam leg'^JJet, 
quin Natur£ penetralia intimius. perfpeHa haheremus^ Natur£ 
quaji Domini falutaremur^ego nullus duhito. Nunquam tamen defue- 
runt^qui id pro viribus pr£j}iterunt^pr£jertimM.^th€matici Fete 
rum VhiUfophorum nonnulli • quamquam opm Hind non fit un'Us al^ 
teriufve kominisjed plurium.imo int gr£ cujufdam Societatis^ ex di- 
verts turn nationibus turn locis coagmentat£. 
For the refl, the Reader may perufe the Book it felf 5 of 
which yet I fear there are bur very few Copies hitherto come o- 
ver^if any more than that,outof which this Accompt is given. 
An Obfervation cQmernin^ certain InfcB-huskj of the Kermes kl^id 
ccmmnnicated b)) Mr.t.\^tx,May 21, 1671. rphich came to hand 
fince the Trintihg of the former Jhei ts, 
1" Gave you a fliorc account f orm ?rly ^ of certain matrices or In* 
fed:-husks5 of the IQrmes-.kh d y 
which I had fom^ years fiiiccob* 
ferv'd on Plumbs trees*This ii.ftant 
A/aj hath afforded me the fame 
Obfervation, and fome little 'ma 
provement of it. I have obfcrved 
the fame Patellmoi Iltsks iiidiffe^ 
rently 
^ JW^t'cfo 17.1677. ,1 find in my Notes (Catth 
he) rhat fome years ap;ol gather'd cflF ojr 
Englifli Oak lOiind Worm-h'jsks vfery like 
berries but 1 thenmaJeno rryal 
of I hem. Again, t have often ob erveJ on 
Tlnmh trees and Cherry trees ; alio on the 
Vine TiVid. Cherry- Laurel c^X'TiXn patelU or fi'ac 
Hasks containing worms, which for at lead 
ihe hus s ; for them cn!y I ha l the oppor- 
runity of making the Experiment on) will 
ftriKe a Carnation with Ly and ftand. 
