(1003) 
Pipes joyned together , fo as coconflitute one greater. Yet 
thefe Pipes were very full , which hindred my better ob- 
fervaticn of them* And I am ape to think, that there 
was one fore of Pipes different from the former , which are 
continued from the Centre of the bone^ towards the circum- 
ierence , as the Infertions do in the Wood of a Plant. But 
I doubt whether 1 fl}a!! be able hereafter more diftinflly to 
difcover thefe laftfaid Pipes , becaufe I cannot haDj 
Bone after my own pleafure* 
Of the Grain of Jvory. 
THe Author of thefe Tranfaftions 
hath often taken notice of the 
Grain of Ivory *, and is that which, upon 
a due pofition to the falling light, is vi- 
fible to a naked Ey e The feveral pie- 
ces whereof it is compofed, appearing 
like the Fibres or threds of a Mufcle ^ 
running in parcels, decujfatim^ and un- 
der and over one anotherreciprocaIly;and fo making up one 
Piece ofPIatted Workras in Fig. g is in fome part reprefented. 
Aiukas hereafter, & in another place may further be (Lew 'n. 
Microfcoftcal Ohfervations of the StrnBure of Hair : Made 
aljh- and Commmicated by the ahovefdd Mr. Anthony 
Leeuvvenhoeck. 
I Have foimerly examined the Strufture of Hair ; and fo 
much as I thought I faw my felf , flewed to certain lear* 
ned Gentlemen ; who then all agreed with me , that it 
confifted wholly of GiiJ^Wf J. As did alfo to my thinking 
the Hoof of an Eik^ But not being fatisfied, without fur- 
ther inquiry; I took the fialr of my Beard ^ after it had 
been fiiaved the firft, fecond, third, and fourth days, and 
obferved, That the little panicles which we faw through 
the common Murofccfes ( which yet were very good) and 
which appeared rounds ^^'^'^^^^Jideed irregular^anfj lay very 
clofely preflTed one iipob' another. Of thefe particles con- 
M the outer parts , or Cuticle for , as the Author calls 
them. Clods) of the Hair/ One of thefe Hairs Iiretwit^, 
which feemcd rare ^ being on the one fide convex , on the 
6 P 3 other 
