22 



DEPARTMENT OF AGRICULTURE, BULS. 326-350. 



Bulle- 

 Special farms — tin No. 



Chester County, Pa., profits, discussion 3 4 1 



vse of term 341 



Spelt- 

 growing at College Park and Arlington experiment farms 336 



yield, comparison with emmer, experiments at College Park and 



Arlington farms 336 



Spermestes cucullata, occurrence in Porto Rico, habits and food 326 



Spillman, W. J., H. M. Dixon, and G. A. Billings, bulletin on 



' ' Farm management practice of Chester County, Pa. " 341 



Spindalis, Porto Rico, occurrence in Porto Rico, variant names, 



habits, and food 326 



Spindalis portoricensis, occurrence in Porto Rico, habits and food. . . 326 



Spinus cucullatus, occurrence in Porto Rico, note 326 



Spore vaccine, preparation for use against anthrax 340 



Sprayer, engine — 



days vsed annually and cost of repairs 338 



trees sprayed per day and cost per tree 338 



Spruce— 



(and balsam fir) of the Rocky Mountain region, bulletin by 



George B. Sudworth 327 



consumption — 



and supply, outlook 343 



by paper-pulp mills amount and per cent of total 343 



grinding — 



cooked and uncooked for news-print paper, equipments and 



experiments - 343 



for news-print paper, yield, etc 343 



of cooked and uncooked, and substitutes in the manufacture 

 of ground- wood pulp, bulletin by J. H. Thickens and G. C. 



McNaughton 343 



gum, collection, note 327 



preparation for grinding news-print pulp 343 



substitutes, pulps, experimental and commercial tests 343^ 



treatment for pulp, effect on product 343 



woods, pulp, experiments and tests 343 j 



Spruces — 



botanical history 327 



description, flowering and seeding habits, economic importance 



etc 327 



generic names, historical notes 327 



ornamental, note 327 



species in Rocky Mountain region, occurrence, variant names, 



growth habits, etc 327 



Squatarola squatarola, occurrence in Porto Rico, habits and food 326 



Squirrels, caching fir cones in water, instance 327 



Stanton, T. R., bulletin on "Cereal experiments in Maryland and 



Virginia" 336 



Steers, income from, comparison with labor income, Chester County, 



Pa 341 



Sterna, spp., occurrence in Porto Rico, habits and food 326 



Stilt, black-necked, occurrence in Porto Rico, variant names, habits 



and food 326 



Stored products, injury by termites 333 



Strasburg turpentine, sources, note 327 



Streptococci, destruction — 



by pasteurization, experiments 342 



by pasteurization, note 342 



Stumping, blueberry, directions 334 



Sudworth, George B., bulletin on "The Spruce and balsam fir 



trees of the Rocky Mountain region " 327 



52-53 

 25 



27-30 



27-30 

 111-112 



1-99 



121-123 



121-123 



129 



10-11 



16-17 

 16-17 



1-43 



4-5 

 3-4 



7-11 

 10-11 



1-151 



5 



9-10 



34-67, 



86-151 



11-17 



45, 68-85, 



116-117, 



141-143 



2-3 



2-3 



2 

 15 



3-17 

 40 

 37 



1-52 



48 

 46-48 



45 



16-19 



17 



12 



2 



3-5 



1-43 



