( 277 ) 



of a lefs number of internal fibres. In order to fatisfy myfelf in 

 this refpe(^i, I often broke pieces of wool, and endeavoured to 

 fplit them into fmaller parts, wherein at firft I was unfuccefsful, but 

 at IcuiTth I found means, not onlv, dirtin61:ly to lee this formation 

 myfelf, but alfo to exhibit the fame to the view of others. 



I therefore delivered to the Limner three micro fcopes, directing 

 him, to make drawings of the obje6ts he faw. 



Fi^. 11, KLMN, reprefents a fmall piece of white fheep's wool, 

 m which, at L and M may be feen, that it confifts of a great num- 

 ber of fmaller hairs, (if we may call the interior parts of the v.'ool by 

 that name ;) and who can tell, whether each of the particles, fliewn 

 at LM, may not again confilt of a great number of ftill fmaller par- 

 ticles ? 



This piece of white fheep's wool, was very tranfparent before it 

 \^as broken, or cracked ; but, at L and M, where many of its oblong 

 component particles are broken or fevered ai'under, it appeared quite 

 opake, and more of a black colour than tranfparent. 



Fig. 12, OPO, reprefents a piece of white wool, placed before 

 another microfcope ; this piece is broken or burft open only in one 

 place, where alone the internal parts appear, and at Q only two of 

 thofe internal parts can be ieen, whereas, in the piece pictured at 

 fg. 11, all the internal fibres are divided afunder. 



Obferving one of the hairs on my arm, to be not only much 

 broken or worn away, by the friftion of my fliirt, but alfo the inter- 

 nal parts to be feparated from each other, I pulled out the hair, and 

 placed it before a microfcope : this piece of broken hair, magnified, 

 is reprefented ztfig. 13, RS., wherein at S, which is the part worn 

 or fretted away, Ibme fmaller particles appear, being the fmall fibres 

 cf which the hair confifis. 



The preceding experiments and obfervations, will, I truft, refute 

 the erroneous opinion I have mentioned, that the hairs, on our bodies 



