1 
294 Art and Nature 
But a Silkworms JVeb, being examined, 
appeared perfectly fmooth and fhining, every 
where equal, and as much finer than any 
Thread the bell Spinfler in the World can 
make, as the fmalleft Twine is finer than 
the thickeft Cable. A Pod of this Silk being 
wound off, was found to contain nine hun¬ 
dred and thirty Yards : but it is proper to' 
take Notice, that as two Threads are-glewed 
together by the Worm through its whole 
Length, it makes really double the above 
Number, or one thouland eight hundred 
and fixty Yards : which being 'weighed with 
the utmod: Exadtnefs, were found no heavier 
than two Grains and a HalfW What an 
exquifite Finenefs is here ! and yet this is 
nothing when compared with the Web of a 
fmall Spider (fee Page 200), or even with 
the Silk that iffued from the Mouth of this 
very Worm, when but newly hatched from. 
the Egg. : 
The fmalleff Dot, Tittle , or Point, that 
can be made with a Pen, appears, when 
viewed by the Microfcope, a vaft irregular 
Spot, rough, jagged, and uneven all about 
its Edges, and far enough from being truly 
round. The fmeft and minuted: Writing, 
fuch as the Lord’s Prayer in the Compafs 
of a diver Penny, or other fuch like curious 
* Ibid. p. 50. 
Performance^ 
