455 
round ova of a blood red colour -, ^5 of an inch in diameter, and 
I found about 200 of these laid in an inch in length, consequently 
40,000 in one superficial inch, when this is considered of, it will 
appear no wonder to tell you the whole bark of the tree appeared 
of a greenish red. In the night no mites were to be seen, but all 
still without motion, but in the day time the whole appeared to be 
one continued scene of action. I examined some of the web, 
which to the naked eyo looked to be one entire coat, but when 
highly magnified very much resembled strips of parchment or 
paper, and when the largest strip I could find was magnified 
seventy-two times, it was £ of an inch in breadth, which 
consequently must be part of an inch in its natural bigness. 
What is very remarkable, these trees in a very short time had 
their leaves curled up, withered, and appeared as if they had been 
struck with lightning, and it is probable this may be the case with 
many which are thought to be so, and may arise from the obstruc- 
tion which the glutinous matter proceeding from these insects, may 
produce to their perspirations. 
“ Most kinds of spiders and Caterpillars are allowed to spin 
webs, but that mites can bo found to do so, is, I imagine, a 
curiosity.” 
In the year 1749, Mr. Arderon discovered in a ditch in the 
Spring Gardens, Norwich, “The Hair like insect,” thus noticed by 
Mr. H. Baker in his ‘Microscope made Easy.’ “The wonderful 
animalcule was I believe first taken notice of by my friend, Mr. 
William Arderon, of the City of Norwich, who kindly sent me an 
account thereof, together with many thousands of the creatures 
themselves, which came to me alive in a vessel of the same water 
they were found in, and lived with me several weeks, whereby I 
have frequent opportunities of being convinced how carefully he 
had observed them This little animal is extremely slender, 
and not uncommonly one hundred and fifty times longer than 
broad. Its progressive motion differs from all animals besides 
hitherto described, for notwithstanding the body is composed of 
many rings and joints, it seems unable to bend at all, or move 
directly forward, but when inclinable to change its quarters it can 
move from right to left, and from left to right, and proceed at the 
same time backwards or forwards obliquely When viewed 
singly they are exceedingly transparent, and of a lovely green, 
