S10 



THE MICROSCOPE. 



fied representations of a few of them. No. 1 is a scale of 

 the AfSrpho menelaus, taken from the side of the wing, of a 



272. Scaletfrom Butterflies' and Moths' wings. (Magnified 200 diarceters.) 



J, Scale of Morpho Menelaus. 2, Large Scale of Polyommatus Argiolus, azure 

 blue. 3, Hlpparchia Janira Argiolus. 4, Pontia Brassica. 5, Podura 

 Plum&ea. 6, Small Scale of Azure Blue. 



pale-blue colour : it measures about 1-1 20th of an inch in 

 length, and exhibits a series of longitudinal stripes or lines, 

 between which are disposed cross-lines or striae, giving it 

 the appearance of brick-work. The microscope should be 

 enabled to make out these markings with the spaces 

 between them clear and distinct, as shown in fig. 273, 

 No. la. 



Polyommatus argiolus, Azure-blue, Nos. 2 and 6, are 

 large and small scales taken from the under-side of the 

 wing of this beautiful blue butterfly; the small scale is 

 covered with a series of. spots, and exhibits both longitu- 



