292 Transactions of the American Institute. 



revolutions are indicated on a disk in fractions and whole numbers; 

 hence no measure is necessaiy, and customers will be waited on 

 with dispatch, and without being defrauded. A committee was 

 appointed to examine it. 



IMPROVED CARRIAGE AND CAR WHEEL. 



Mr. John Raddin, Lynn, Mass., exhibited an improved carriage 

 and wheel. This wheel is elastic, for an elastic washer, or cushion, 

 is introduced into, the hub, bearing against the axle, preventing 

 shocks or strains. The spokes have screws at each end, so that by 

 turning them, the felloe may be expanded, and the tire tightened. 

 In a car wheel, the hub is made separate from the web, so as 

 to be replaced at a small expense. A ring of rubber surrounds 

 the hub, between the web and hub, and there is a packing of rub- 

 ber between the flange and hub, wliich, with other details, give 

 ease of motion, and relieve the wheels from sharp concussions. 

 The inventor stated that these wheels are used on the Eastern rail- 

 road, and on the steam fire engines in Boston. 



EXPERIMENTS WITH. POTATOES. 



Mr. W. S. Lunt, Fostoria, Seneca county, Ohio, communicates to 

 the Club the following experiments with potatoes. Yield of pota- 

 toes planted 19th day of April in single eyes, in drills, on the same 

 day, and received the same treatment: Goodrich Early, one pound 

 seed gave fifteen pounds product; or, allowing twelve bushels seed 

 per acre, the product would be 186 bushels per acre. Pinkeye 

 Rusty Coat, one pound yields seventeen and a half pounds, or 210 

 per aere. Flukes, one pound seed gave nineteen pounds, or 228 

 bushels per acre. Garnet Chili, one pound seed yields twenty-one 

 pounds, or 252 bushels per acre. Cuzco, one pound gave forty- 

 one pounds, or 486 per acre. Harrison, planted a few days later, 

 and on better soil, gave at the rate of 450 bushels per acre, while 

 the quality is far superior to the Cuzco. These results are 

 obtained in one of the dryest seasons known for twenty years. 

 Thus fur no rot appears in any of these kinds. 



Mr. Edwards Hicks, North Hempstead, L. I. — I have heard farm- 

 ers say, " I rather think large potatoes will yield the most," and 

 have read experiments which proved that large seed did give a 

 little the best yield, which has induced me to make experiments 

 with the view of finding what size and preparation of seed is the 

 most profitable to plant, rather than to ascertain which gives tho 

 gi'eatest yield. 



