Microscopical Essays. 



liarder than free-flone; the grains are, in general, fo firmly 

 united together at the points of contact, that it is hardly poflible 

 to feparate them without breaking one or both of the grains. 

 See Hooke's Micrographia. 



Insects of all kinds, both foreign and domeftic, are pleafing 

 objects ; but as the foreign ones are not fb eafily met with, I 

 {hall mention but a few of them, confining myfelf principally to 

 thofe of this country. Among the exotic infecls none appear more 

 beautiful in the microfcope than the curculio imperialis, Brazil, 

 or diamond beetle ; the bupreftis ignita, a large beetle from 

 China; the meloe veficatorius, blifter-fly,. or cantharis of the 

 (hops ; feveral fpecies of locufts, grafshoppers, &c. Among the 

 Englifh beetles we may reckon the fcarabaeus auratus, or rofe 

 chaffer, fcarabaeus nobilis, fcarabasus horticola, filpha aquatica, 

 caffida nobilis and nebulofa. Coccinella, or lady-cow ; of thefe 

 there are great variety, both in fize and colours, fome red and 

 black, others black and red, and fome yellow and black. Chry- 

 fomela, graminis-faftuofa, nitidula, fericea, melanopa, afparagi, 

 vide Plate XX. Fig. 2. Curculio-frumentarius, lapathi, betuta, 

 nucumi fcrophularia, argenteus, a beautiful little infecl: refem- 

 bling the diamond beetle, but in miniature ; curculio albinus, 

 very beautiful, but fcarce in this country. Leptura aquatica, 

 thefe are of various colours, as blue, purple, bronze, and crim- 

 fon. Arcuata ariclis, very common, and is often called the wafp 

 beetle. Cicendela campeftris, on dry banks. Carabus nitens, 

 fcund in Yorkfiiire, a beautiful infecl:, many fmall carabi. Gryl- 

 lus, gryllo talpa, or mole cricket j this infecl:, and the grafs- 

 hoppers, are many of them too large to be obferved.at one view, 

 but the head, fore and hind feet, elytra, Sec. viewed feparately, 



4 P are- 



