20 



DEPABTMENT OF AGKICULTUEE, BULS. 151-175. 



Bulletin. 



Intertilling, potatoes with wheat, yields, experiments.. 157 



Iowa — 



farm tractors, number, effect on industry, financial 



investment, etc 174 



wireworm pests, notes 156 



Iron arsenate — 



insecticide, value 160 



use with cactus solution against cucumber beetles, 



experiments 160 



Irpex, genus, characters and description of species...... "175 



Irrigation water, conveying in wood pipe 155 



Ithy phallus, genus, characters and description of species. 175 



Ixoreus naevius. See Robin, Oregon. 



Jayne, S. O., bulletin on "Wood pipe for conveying 



water for irrigation " 155 



Jones, P. R., and S. W. Foster, bulletin on "The life 

 history and habits of the pear thrips in Califor- 

 nia" 



Juglans — 

 nigra — 



stock for Persian walnut, San Antonio region. . . 

 See also Walnut, black. 

 rupestris, stock for Persian walnut, San Antonio re 



gion. 



Jujube, growing in San Antonio region, experiments, 

 notes 



Kansas — 



farm tractors, number, effect on industry, financial 



investment, etc 174 



wireworm depredations, notes 156 



Kentucky, wireworm pest, note ^. . . 156 



' ' Kerosene tractor. ' ' use of term 174 



Kerosene, use with tractors, comparison with gasoline. . . 174 

 King, Vernon, statement on corn and cotton wireworm, 



damage to crops, etc 156 



Lacon rectangularis, wheat pe3t, note 156 



Lactarius, genus, character, descriptions of species, etc. . 175 

 Land — 



fallow. See Fallow. 



fallowing, purpose 151 



' ' unimproved, " use of term 153 



Lands, waste, utilization for forest planting 153 



Larch. European — 



planting in mixtures, soil requirements, etc 153 



uses on farm 153 



value for telephone poles, prices, demand 153 



value in forest plantations, cost, etc 153 



Larix europaea. See Larch, European. 

 Lathrop, Elbert C, bulletin on "The nitrogen of pro- 

 cessed fertilizers " 158 



Lead arsenate, use with cactus solution against cucum- 

 ber beetle, experiments 160 



Leaf coral, fungus, description and value 175 



Leather, roasted, nitrogen content 158 



Lentinus, genus, characters, descriptions of species, etc. . 175 



Leotia, genus, characters and descriptions of species 175 



Lepiota, genus, characters, description of species, etc. . . 175 

 Letteer, C. R., bulletin on " Experiments in crop pro- 

 duction on fallow land at San Antonio"" 151 



