Microscopical Essays. 



693 



kernel, as in other feeds, there appears an entire green plant, 

 folded up in a mod furprizing manner. The pedicle of this is 

 about two-eighths of an inch long, and it's feminal leaves of about 

 fix-eighths each; between thefe the germina of the next pair of 

 leaves are plainly vifible to the naked eye, but with a microfcope 

 they are feen with the greateft beauty and perfection. Thefe, and 

 a number of fuch other beauties in this part of the creation, are 

 defcribed at large by Dr. Paribus, in his work entitled, "A 

 Microfcopic Theatre of Seeds." Moft kinds of feeds mould be 

 prepared for a microfcopical examination, by fteeping them in 

 warm water till their coats are feparated, and their feminal leaves 

 may then be opened without laceration. But feeds, while dry, 

 and without any preparation, are of an almoft infinite variety of 

 (hape, and afford a number of pleafmg objecls for the micro- 

 fcope. 



Transparent. Objects.. 



We may fele& from the elytra, or upper wings of beetles,, 

 many beautiful obje&s;.-the conftru&ion- of thefe will be found 

 to differ very much ; the membranaceous wings, as in the fcara- 

 baeus folltitialis, or fmall cock-chaffer; blatta americana, 01 

 cock-roach; all the grylli; as locufts, grafshoppers, &c. Among. 

 the cicadas, the elytra of the nervofa are the moft elegant, the 

 nerves are elevated, and curioufly fpotted with brown.. The 

 elytra of the cimeces, or field bugs, which are a very numerous 

 tribe, afford a great variety of objects ; we may fefecl from thefe, 

 as the moft beautiful, the elytra of the cimex baccarum, flriatus,. 

 Plate XX. Fig. 'l The elytra of the fulgora candelaria, from. 

 China, differs eiTentialiy from all others., 



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