630 INDEX. 



Arts of the ancients, 528 



Astor library, 110 



Astronomical observatory, — 94 



Award of scientific reputation, _ 105 



B. 



Babbage's light house system, „ 86 



Bache's anniversary address bef )re the Institute, 73 



Balloon frames for houses, 218, 219 



Ball's safety pump for supplying steam boilers with water, _ 188 



Barley, beardless, 253 



Bees, - 194 



Bessemer's plan for manufacturing cannon, 584 



Blackberry, a new seedling, 251 



wine, _ 358 



Black warts on plum trees, _ 218 



Blot's mode of cultivating mushrooms, 344, 351 



Boone's empire rope making machine, _ 182 



Botanical garden of St. Petersburg , 504 



Boydell's traction steam engine, 240, 270, 276, 539 



Bread from wheat, _ 322 



Breckenridge coal, 303 



Burnham's force pump, 189 



Butler on locks, _ 532 



Butter, 264 



C. 



Calculating machines,.. 588 



Cattle shows in Spain, 258 



Cedar of the Pacific,... 402, 449 



Chemistry of steam, _ 589 



Chestnut timber, _ 310 



China, 384 



Clay soils converted into loams by the action of lime, 258 



Clinton on agriculture, 245 



Coats' portable gas works, _ *194 



Commercial associations, 93 



Comparison between reaping machines and handwork, 308 



Composition of milk, 282 



