108 MICROSCOPIC OBJECTS. 



Second Section (Standard). 



Feathers of the Morpho Menelaus. 



Alucita pentadactyla. 



■ Alucita hexadactyla (from the body). 



LycEena Argus. 



Tinea vestianella (from under side of the wing). 



Third Section (Difficult). 



Scales of Lasciocampa Quercus 



Janira Aira. 



Acromycta tridens (Dagger Moth). 



Podura plumbea. 



Feathers of Pieris Brassica (Cabbage Butterfly). 

 Flutings of the shells of certain Fossil Infusoria. 



DEFINITION. 



Hair of Mouse (Mus domesticus). 



Bat (Vespertilio murinus). 



Moss leaf of Hypnum (species unknown). 

 Lycaena Argus (spotted scales). 



(1.) " Lepisma saccharina. — ^The insects of the families 

 Lepismense and Podurellse are comprehended in the order 

 Tliysanura of Cuvier. They are small, frequenting damp 

 places, and are of various colom'S ; they leap like fleas. 



" The scales of these apterous insects must be taken 

 from fresh specimens ; for when long dead they adhere 

 so firmly to the insect that they cannot be detached 

 without injuiy. 



" Their longitudinal lines slightly radig-te from the 

 point of insertion ; they are readily seen, and appear 

 flat or square, like the indentations on some bivalve 

 shells ; these are the prettiest scales I am acquainted 

 with. There are other lines in vai'ious directions. When 



