INDEX 



29 



Referenct a 



Pears, example of pome . . . 310 



Pear scab (figs.) 359 



Peas, Mendel's experiments <>n . 125 



Pectoral girdle of vertebrates 105 



Pedal ganglion of clam . . 96 



Pelagia, a medusa (fig.) • • • 67 



Pelvic girdle of vertebrates 106 



Pelvis, of kidney 207 



of trunk of in;iii 207 



Penguins, use of wings . . . 136 



Pennaria, classified ('» 



tiarella (fig.) 68 



Pennyroyal, a medicine . . . 331 



Peony, use of :<l'7 



Pepo, special form of berry . . 311 



Peppermint :;.".l 



Pepsin in gastric juice ... 171 



Peptone in agar-agar formula 346 

 Perch, a bony fish (fig.) . 104, 106 



classified •; 



Perfect flower, definition <>f . 297 



Perianth of lily family . . . 326 



Pericardium, of clam .... 97 



of man 201 



Permanent teeth (fig.) . . . KIT 

 Persian lilacs pollinated by 



swallowtail butterfly (ti v.) 299 

 Perspiration, amount of, how 



regulated L90 



a waste product 



use of 190 



Petals of bean flower . . _".»*; 



Petiole, length of 389 



of bean leaf 272 



of clematis (fig.) '_".»_' 



of nasturtium (fig. ) . . . . '_".i2 



Petroleum, format i f. . . 375 



Petunias, members of night- 

 shade family 331 



Phanerogams, a group of plants c, 7 



Pharynx, of earthworm ... Bl 



of man 164, l»'»o 



Pheasant, a seed eater ... 1 17 



wings of 1 •'••'» 



Phenolphthalein test for acid 21 M ' 

 Phlegmatic temperament, 

 heart tracing of (fig.) . . , 



Phloem, carrier of food . . • 271 



conducting food materials • . '-"•' ,| 



constituent of green bark . 287 



are to pagi 

 Phloem, contintu d 



pi '-it ion in w I\ -t .-m . 



position of in \ ascnlar bundle 

 Phaebes, destroyers "f Lepidop- 



tera 



Photosynthesis, finished prod- 



net of 



<-\ \ gen produced bj .... 

 performed bj stem .... 

 \ ital process In plants 



Phosphates 176, 



Phosphorus, a chemical ele- 





l 





menl found in li\ ing thing* 



a poison 



in lipoid 



179 



useful in body 



Phylum (Phyla i groups of 



plants and animals ... 7 

 Physical change described . 

 Pieplant, storage <>i food in . . 



Pigment in skin 



Pigs, important mammals 151 



Pike, a bony ti>h !<*; 



raised in hatcheries . . . . ill 



Pill bug (fig.) 9] 



Pine, example of gymnosperm . 7 



pollen of (fig I 57 



ripe cone of i fig. ) 



seed Of ( fig.) 



ataminate Bl robill of (fig.) 



t ree, described 77 



parts of 



Pine grosbeak at hemp and 



millet station n* 



Pine siskin at hemp and millet 



station 148 



Pinnae of fern frond .... 



Pinnately compound leaves 



of walnut family .... 



Pistil, described 



diagram of 



Pistillate flower, described 



of monoecious plant 



of willow (fig) 



Pitch, souree of . . . 

 Pitcher plant 



leaves ol (fig 



use of leaves In 



Pith in corn stem .... 

 Plague of locusts .... 



