inj)j:\ 



. ( . ) 



Pear-tree hoivr, loo 



Pecan, 00 



Peeper, ol(i 



Pellagra, 118, 251 



Pennyroyal, 128 



Peonies, 80 



Pejiper bush, 80 



Pcppergrass, 70. 71 



IVrc-h, 300 



Perennial crowns, 71 



Peritonitis, 28-4 



Periwinkle, 274 



Pheasants, 40 



Phenol, coefficient of, 249 



Phloxes, 80 



Phoibe, 47 ; food of, 25 



Phosphates, 223 



Phosphorus, 90, 98, 09, 100, 101 ; 

 used for poisoning rats, 181 



Pickerel frog, 315, 310, 319 



Pied-billed grebe, 38 



Pig, 201 ; as host for trichina worm, 

 207 ; itch mites of, 100 ; tapeworm 

 of, 203 



Pigeon, 35, 30, 42 ; killed by rats, 

 174; kinds of: band-tailed pigeon. 

 43 ; passenger pigeon, 43 ; red- 

 billed pigeon, 43 ; Viosca's pigeon, 

 43 



Pigeon grass, 70 



Pigeon hawk, 45 



Pigweed, 09, 70 



Pimples, 248 



Pine, 59, 83, 84 ; white pine, study 

 of, 4, 5, 



Pintail, 39 



Pin worm, 200 



Piroplasmas, 257, 258 



Pitch pine, 59 



Plague, 230 



Plankton, 219 



IMant food, essential elements (»f. 99 : 

 losses in, due to cropping, 102 



Plant lice, 153. 15«». 104 ; t< riindity 



of, 18 

 Plant i)robl('ms, (J7 70 ; coiuiervfttiou 



of native i)lants, ()7 

 riiiiit.iiii. 71 

 Plover, 40 

 Plum, H)5 



Plymoiuh li(»(k, l(i4 

 Pneumococcns, 234 

 Pneumonia. 121. 1H4, 232-2:;ii. _M>. 



250, 251 

 Poison ash. 75 

 Poison eldei-, 75 

 Poison hendoek. 72, 75 

 Poison ivy. 74. 75 

 Poison laurel, 75 

 Poison oak, 74, 75 

 l*oison root, 75 

 Poison snakeweed, 75 / 

 Poison sumac, 74. 75 

 Poisonous i)lants, damage from, 73; 



list of, 75, 70 

 Poisonous snakes, 110, 327-329 

 Pokeroot. 70 

 Pokeweed. 75 

 Poliomyelitis. 122 

 Ponds, as balanced aijuaiia. 304 ; 



possiltle i)roduction from. 307 

 I'ol)lar. 105 

 Porpoises. 109 

 Potash, 102. 223 

 Potassium, 90, 9H. 99. ]n0. 101 

 Potato, 93, 97; blight or sc:ib of, 



210. 215 

 Potato beetles, 42, 153 

 Poultry. 103. 104 

 Poultry mite, 107 

 Pout, 300 



Praiiie chicken. 53 

 Prawns, 28 7 

 l»roteans. 313 

 I'roteiii. 1S7. 189 

 I'roto/.oa. 255, 250 



