RHODE ISLAND. 179 



A discussion of the needs and treatment of the Warwick Plain and other 

 sandy soils of Rhode Island with the results of several plat and plain 

 experiments. 



Bvttetvn 69, pp. 30, pis. 3. — A Study of Plant Adaptations. — Obser- 

 vations upon the growth of a large number of different kinds of plants 

 on an acid upland soil, limed and unlimed. 



Bulletin 70, pp. 12. — Analyses of Commercial Fertilizers. — Analyses 

 and valuations of 55 samples of fertilizers. 



Bulletin 71, pp. 8. — Experiment in Top-dressing Grass Land. — Re- 

 sults for 1900 of experiments in applying no nitrogen and 150 and 450 

 pounds of nitrate of soda per acre to grass lands. 



Bulletin 72, pp. 16, pis. 9. — Special Instruction in Poultry Culture. — 

 The special course of instruction on the care and management of poultry 

 which the station offers is described. 



Bulletin 73, pp. llf. — Commercial Fertilizers. — Tabulated analyses 

 of 73 samples of fertilizing materials not previously reported, with a 

 summary of the results of fertilizer inspection. 



Bulletin 71^, pp. 2Jf. — A Rotation of Crops. — An account of a rotation 

 experiment with potatoes, rye, and clover, with a discussion of the 

 advantages of crop rotations and a detailed history of the plats used 

 in the experiment. 



Bulletin 75, pp. 28. — A Four-year Rotation of Crops. — A detailed 

 description of the conditions of a rotation experiment with corn, pota- 

 toes, rye, and clover, with the results obtained. 



Bulletin 76, pp. 26. — A Five-year Rotation of Crops. — Detailed 

 results for the first year of a rotation experiment with cornj potatoes, 

 and rye one year each, and grass two years. 



Annual Report, 1899, pp. 139, pis. 2. — This includes a report of the 

 director giving a general review of the work of the station during the 

 year; a financial statement for the fiscal year ended June 30, 1899; 

 lists of donations, exchanges, and station publications; and depart- 

 mental reports containing in addition to summaries of the different lines 

 of work results of several experiments with orchard fruits and lettuce, 

 an account of experiments with carnations for the prevention of stem 

 rot, miscellaneous chemical analyses, studies of the amount of humus 

 in soils and the percentage of nitrogen in the humus as affected by 

 applications of air-slaked lime and certain other substances, a brief 

 accoant of four cooperative experiments with grasses in continuation 

 of earlier investigations on the lime requirements of Rhode Island soils, 

 observations upon the after effect of sulphur when applied to soils for 

 the purpose of preventing potato scab, results of a comparative trial 

 of different clover and grass mixtures for seeding, results of experiments 

 in liming grass lands before and after seeding, observations upon the 

 effectiveness of nitrate of potash as compared with like amounts of 

 nitrogen and potash in form of muriate of potash and nitrate of soda, 



