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fices of the tubes fo as to leave an opening at the end in fome of 

 them, as far as my eye could judge, about the fiftieth part the 

 fize of a Mite's egg, and others larger : thefe glafles I then placed 

 before the microlcope, for thefe creatures, by reafon of their mi- 

 nutenefs, are almoft invifible, and by my naked eye I could not 

 perceive they had any life in them. 



I have given a drawing of the Mite, as feen through the micro- 

 fcope, to fhew its Ihape as nearly as the limner could imitate it. 



Plate XVI, fg. 9, A B, reprefents the Mite's egg, the fliell of 

 which is covered with fo many fharp prominent parts, that the 

 whole appears dotted : thefe eggs may be feen in great numbers, 

 in the rinds of cheefe, efpecially when the cheefe is old and Mites 

 are difcovered in it. Fig. 10, C D E F, is a Mite feen through the 

 microfcope when fixed to the point of a needle. This creature 

 has eight feet, in each of which the joints are reprefented as accu- 

 rately as could be done ; moreover each foot is furnillied with two 

 wonderfully minute crooked claws at its extremity, m ith which the 

 animal can readily grafp any thing, and fupport its own body ; and 

 I have feen a Mite, when fixed to the point of a pin, lay hold 

 with its claws on the hair of another Mite and fufpend it in the 

 air, and I wondered that a fingle hair of a Mite Ihould be fo firong 

 as to hold the animal's body fufpended by it. At D is fliewn the 

 head of the Mite, the tore part of which is fo very fliarp, though 

 with an opening on it, (from which opening I have feen fome- 

 thing like a tongue put forth),, that the mouth might be fitted to 

 bite afunder the fibres of the flcfli on which it feeds, as I have 

 feen in the feet of a loufe gnawed by a mite, leaving oblong 

 fcratches. On each fide of the head was a crooked hair, beginning 

 at the thicker part of the head, and ending near the extremity, as 

 if it were alfo fixed there, which at firll I thought it was, but hav- 

 ing often feen that when a Mite touched thefe hairs, while clean- 

 ing its head, in the manner that cats and other animals do, the 

 hairs when moved out of their place recovered themfelves with a 



