686 INDEX. 



Page. 



Mapes, Prof., lecture on manures 409, 416, 424, 435, 444, 449 



Mulching _ 461 



Magnetic needle _ , 608 



Mechanical puzzle _ 610 



N. 



North Carolina, agriculture of _ _ 266 



0. 



Olcott, H. S., on the horticultural exhibition _ 43 



Orchids or air plants _ 57 



Oats _ _ 193 



Orchards _ 362 



Orchards, renovating old 388 



Opium 630 



P. 



Premiums awarded at fair _ 31 



Potatoes 93, 107, 240, 248, 261, 419, 422 



Plants, ornamental list -of _ 97 



Poultry. _ _ _ _ 99 



Plants, hot house ._ 104 



Planting fruits and flowers _ 123 



Peach trees _..125, 253 



Peach grub _ 161, 186 



Pruning grape vines 188 



Potato, crop of, on Long Island... 204. 221 



Pears 251, 257, 270 



Pork as food _ 262 



Pruning grapes and other plants 283 



Plants, controlling the sap 291 



Pell, R. L., on sap and plants 291 



Pop corn, preparation of, for good 297 



Poultry question ' 316 



Plants, hardy, herbaceous list of _ 394 



Plaster of Paris 453 



Polytechnic Association, proceedings of 467 



Polytechnic Club, rules for 480 



Paint for iron vessels _ 486 



Pottery 544, 545, 546, 547, 554 



Pyrometer 557, 600 



Projectiles 561, 565, 572, 576, 657, 663, 665, 668, 677 



Pell, on cotton 592 



