. .? 



2 





5 

 Sparrow . 



f 





6 

 Sparrow . 



7 

 Chick. 





 -f'roy . 



n. 

 Toad . 



Skate 



f 



23 



Cod. 



* 



Lobster . 



^/fi (S4- objects are' seen, of t/tar relative sizta. tang aWc& magnified/ 600 Diajnetcrs . 

 Their actual sixes may be, determined, by reference, to tfie- spaces they occupy between, Inf 

 fiarieantal lines, which are jfo* of a, faris laie, apart in, the, nucrojneter itself . 

 Thus the actual length, of a in, fiy. 5. is i&o'" f 'Faris lint-J 



-Id nut dtLMortin. Sorry 



