VI TABLE OF CONTENTS. 
Chapter XVI. 
Page. 
Insects injurious to the spruce 811 
Affecting the trunk and branches, Hll — Affecting the leaves, 830 — Affecting 
the cones, 3.">4 — Other insects of the spruce, 856 — Insects injurious to the 
Rocky Mountaiu spruce and Douglass spruce. 857. 
Chapter XVII. 
Insects injurious to the fir tree 861 
Affecting the trunk, 361 — Affecting the leaves, 862— Other insects of the 
fir, 869. 
Chapter XVIII. 
Insects injurious to the hemlock and larch -71 
Injuring the trunk, 871 — Affecting the leaves, 873. 
Insects injurious to the larch or tamarack : Affecting the leaves, 879— Other 
insects, 903. 
Chapter XIX. 
Insects injurious to the juniper 904 
Affecting the trunk. 904— Affecting the leaves, 907. 
Insects injurious to the common juniper, 910. 
Chapter XX. 
Insects injurious to the cedar and cypress 917 
Insects injurious to the cedar, 917. 
Insects injurious to the cypress, 921. 
Insects injurious to the Sequoia gigantea,9£l. 
Explanations to plates 923 
Indices of insects, plants, and authors quoted 929,947,953 
