INDEX 



19 



Ground birds, wind's «>f . . . 136 



Grouse, a seed eater . . . . 117 



at whole grain station . . . 1 19 



Growth of bean embryo . . 264 



Grubs, larvae of beetles . . . 19 



of bean weevil - • l * > 



Guard cells, of fern Btomata 373 



of stomal a 273 



Gullet, of paramoecium . . . 50 



Gulls, sailing birds 136 



herring ( fig.) 137 



Gums, effect of tartar on . . . fi.7 



Guttation drops, defined . . -74 



Gymnosperms, by-products of 384 



classified 7 



discussed 376 



field study of 383 



reason for name 381 



student report on 383 



use of 384 



Gypsy moths, injurious insects 28 



H 



Habitat, of evergreens .... 381 



of mosses 364 



of Protozoa 46 



Habits of plants, of interest to 



fanner 402 



Haemoglobin in corpuscles . . 197 



Hair, origin of 190 



Hair snakes 78, 79 



Hair worm 7 s 



in body of grasshopper (fig.) . 79 

 Hairs on leaves of Venus's 



fly-trap "''.'1 



Hairy woodpecker i fig.) . . H7 



Halibut, value of as food . . . ITS 

 Hand, superficial lymphatics ol 



(fig.) . • • •' 204 



Hard palate 166 



Hardwood, forests, described . 388 



trees, large flowering plants . 323 



Harmful bacteria 343 



Harvest-man, harmless arach- 

 nid 91 



Hawk, Cooper's 148 



example of bird 7 



marsh 146 



red-shouldered 148 



are to /"'.'/■ 



Hawk, contin 



red-tailed 



sharp-shinned 



Hawks, beneficial birds ami 



claw s of 



Hawkweed, a common weed 

 Hay infusion for protozoa 

 Head, of fish 



ol grasshopper 



ol rat t lesnake book lug p< 



glands (fig.) . . 

 of young eagle (fig.) 

 Headache medicines 

 Head end of earthworm . . 

 Heads, inflon bc< nee of compos- 

 ite family 



Head-thorax region of cray- 

 fish 



Headwaters of rivers pro- 

 tected 



Health 



Healthy bodies and bacteria 



Hearing- 



Heart (fig.) 



and lungs (fig.) 



center 



nuisi le ••■■Us t fig. i 



of craj fish 



valves of 



Heart and blood-vessel- 

 man 



Heart-shaped body, prothal- 



lium oi fern 



Heat and pressure. Influence 

 of in forming coal .... 

 Heating 1 , common methods 



hot air (fig.) 



milk, eft. ct of on bacteria . . 



strain (fig.) 



protection of bacteria from . 



Hedge nettle iti-. > 



Heel of man ....... 



Hellebore, sourer of • • 



Helmholtz on alcohol . . . 



Helpful bacteria 



Hemiptera. discussed .... 



order of insects 



Hemlock, bark, use oi 



Colics Of (fig.) 



conifer 



143 

 148 



1 .7 



• 



19 



13 



l l 

 l»<> 



Sii 



•: 



218 

 201 



22 1 



190 

 197 

 187 



10 



