ESTOEX. 637 



Rot of tLe potato, causes and remedies, 45, 46, 83. 



liouget, investigation of, 516. 



Kules and regulations for co-operation with States for the suppression of pleuro-pnett- 



monia,^449. 

 Eye, chemical examination of, 149, 150. 



comparative production, area, and value of, 349. 



S. 



Saint Augustine jjrass, 75. 



San Joaquin Valley, California, locusts in, 289. 



Jos6 nozzle, 303, 

 Say's description of Anihonomus musculua and A.signatus, 280. 

 Scumideerger's account of Cecidomyia nigra, 2SG. 

 Seed changing, 58. 



crossing or hybrid! z.ation, 48. 

 Divibiou, Eeport of Chief of, 47. 



■work in, 25. 

 improvement of, 48. 



hy selection and cultivation, 54,55. 

 nomenclature of, 59. 

 pollen, 49. 



saving, 50. 

 substances afi'ecting the germination of, 58. 

 Seeds, amount appropriated for the purchase and distribution of, 47. 

 comi)laiuts as to distribution of, 48. 

 differences in, of the same plant, 54. 

 distributed annually, 47. 

 germination of, 57. 



interchange of, with foreign countries, 48. 

 methods of distribution of, GO. 

 object of distribution, 47. 

 proper method of distributing, 47. 

 tabular statement of distribution of, in lS8-l-''85, Gl. 

 vitality of, 56. 

 Self-fertilization of plants, 51. 

 Serrell's automatic silk-reel, 208, 209, 218. 

 Setaria glauda, 88. 

 Silk culture, exhibit of at Exposition, 34. 



in the United States, 207 to 209, 214 to 219,221,223,227. 

 vrork in Division of, 13. 

 Skunk cabbage, character of, 74. 

 Smith, J. B., report on Dark-sided cut-worm, 273. 



Strawberry weevil, 277. 

 Smut of timothy, 87. 



Indian corn, 88. 

 Societies, local agriculture, 6. 

 Soil, acquired or temporary fertility of, 160, 



analysis, objects, and interpretation of, 170. 



of, in India, 569. 

 analyses, 151. 



apparatus used for mechanical analysis of, 161. 

 barrenness of, 158. 



care necessary in obtaining sample of, 1C2. 

 chemical properties of, IGl. 

 composition of the, 152. 

 denudation of, 153. 

 diiS'erence between, and subsoil, 152. 

 effect of sand in, 161. 



fertility of, depends on climatic conditions, 157, 

 formation of, 153. 

 how tilled in India, 571. 



improvement of, 160. v 



mechanical analysis of, 160. 

 objection to mechanical analysis of, ICl, 

 on derivation and formation of, 151. 

 power of retaining moisture in, 157, 

 quantity of, swept away, 154. 

 temperature of, 157. 

 weight of, per aero, 1C8. 



