BXPLANATlOIf UF THE PLATES. 



PLATE 1. 



Fig. 1. Sphaeria on the leaf of an elm, p. 89. 



A. A portion enlarged, and the cuticle parting. 



B. The same enlarged, representing the capsules 

 Fig. 2. Sphaeria bifrons, on a laurel leaf, p. 88, 89. 



C. The front, and dorsal parts, 



D. Imbedded capsules. 



Fig, 3, Sphaeria coryli, on a nut branch, p. 90. 



E. The tubercle enlarged, bordered with the epidermis, 



F. A section of the capsules at the base. 

 Fig. 4 Sphseria faginea, on a beech stick, p. 90, 



G. Section of a tube, with the capsules at the base. 



H. Group of the tubes detached from the bough, with 



their capsules. 

 I. A tube detached. 



PLATE 2. 



Fig. 1. A chrysalis of an insect, p. 191, 192. 



B. The inner hood. 

 Fig. 2. The branch of an apple-tree, infested with the aphis lanata. 



p, 235, 236. 

 B. The aphis enlarged, with the globules, and the cotton 



that surrounds them. 



IX The early appearance of the insect with its termi- 

 nating bristle. 

 E. Appearance of the creature in winter. 



WOOD ENGRAVINGS. 



Spines and tubes of the hedge-hog, enlarged, p. 99. 

 Harvest mouse and nest, p. 100. 

 Plumage of lepidopterous insects, p. 194. 

 Agaricus surrectus, p. 256. 

 Roots of an ash, p. 258. 



