Plant Index. 



237 



Peronospora viticola, 185. 



Physalis, 142, 207. 



Physalospora Bidwellii, 185. 



Phytonomi, Entomophthora, 178. 



Pine, 19, 21. 23, 24, 25, 69, 142, 147, 187. 



Pine, maritime, 19. 



Plantain, 14. 



Platanus occidentalis, 107, 208. 



Plowrightia morbosa, 185. 



Plum, 13, 17, 58, 103, 105, 106, 137, 185, 18G, 



200. 

 Plum leaf fungus, 185. 

 Plum rot, 185. 

 Pollen, 143. 

 Pomegranate, 187. 

 Poplar, 44. 



Poplar, Lombardy, 102. 

 Populus balsamifera, 102. 



dilatata, 102. 



monilifera, 44. 

 Potato, 142, 146, 191, 204. 

 Powdery mildew, 185. 

 Prince's Pine, 92. 

 Pteris aquilina, 52. 

 Pyrethrum, 77. 

 Pyrethrum inodorum, 78. 

 pyrinum, Fusicladium, 185. 



Quercus, 63. 



bicolor, 44. 



nigra, 205. 



prunus, 42. 



rubra, 42, 205. 



tinctoria, 42. 

 Quince, 15, 84, 87, 103, 109, 174, 187, 208. 



B. 



Ragweed, 156. 197, 198. 

 Eamularia Tulasnei, 185. 

 Easpberry, 138. 

 Easpberry rust, 185. 

 Eed oak, 42. 

 Eed Root, 86. 

 Ehubarb, 92. 

 EcEstelia penicillata, 185. 



Rose, 57-59, 188, 193. 

 rubra, Quercus, 42, 205. 

 rubrum, Acer, 179. 

 rupestris, Juglans, 203. 

 Rye, 29. 



S. 



Soolopendrium vulgare. 79. 

 Scrub oak, 205. 

 Septoria cerasina, 185. 

 serrulata, Alnus, 97, 101. 

 Shad-bush, 137. 

 Siberian arbor vitae, 201. 

 Soft maple, 146, 193. 



Solanum, 191. 

 Solidago, 23, 86. 



Canadensis, 142. 

 Sonchus oleraceus, 77. 

 Sow-thistle, 177. 

 Sphaceloma ampelinum, 185. 

 Spinach, 53. 

 spiralis. Uncinula, 185. 

 Sporotrichum larvatum, 100. 

 Spruce, 20, 21, 22, 24, 96. 

 Squash, 138. 

 Squill, 92. 



Strawberry, 16, 156, 185, 187, 204. 

 Strawberry leaf-blight, 185. 

 Sugar maple, 204. 

 Sweet-flag, 92. 

 Sycamore, 38, 107. 



Tamarack, 21, 205. 



Tamarix, 154. 



Tanacetum, 73. 



Tansy, 73, 194. 



Thuja occidentalis, 20. 



Tilia, 63. 



Timothy, 56. 



tinctoria Quercus, 42. 



Tobacco, 88. 



Tomato, 185. 



Tomato rot, 185. 



triacanthos, Gleditschia, 83. 



Tsuga Canadensis, 59. 



Tulasnei, Ramularia, 185. 



Turnip, 79. 



Ulmus, 63, 144, 198. 

 Uncinula spiralis, 185. 

 Urtica dioica, 77. 



Vaccinium, 52, 137. 

 Valerian. 199. 

 Verbena, 77. 187. 

 vulgare, Scolopendrium, 79. 



W. 



Walnut, 187. 



Wheat, 11, 17, 28, 72, 88, 92, 135, 168, 176. 



White birch, 206. 



White elm, 198. 



Wild crab, 184. 



Wild grape, 65, 142. 



Willow, 58, 102, 115, 146, 187. 



Woodbine, 79. 



Yucca, 158. 



