ground would not have produced more than 18 to 20 bushels wheat per acre without the guano--or some other more expensive manure. 1849. Oct. 3. Sowed wheat upon oat stubble field; soil thin and gravelly upon part of the field--used some barnyard manure, but not as much as previous year. Top-dressed with 300 lbs. guano and 12 bushels ground bones per acre--Harvested 12th July 1850--Yield of 5-1/2 acres 160 shocks; injured some by weevil, and shrunken, but had 145 bushels or twenty-six bushels per acre. This ground would not have yielded fifteen bushels per acre without the guano. But the most decisive result was obtained the next year, upon an oat stubble field of six acres, a part of which had been cropped, for perhaps 15 years, nearly alternately with rye and buckwheat; (sometimes a crop of each in one year.) The whole field seemed so far exhausted that we had failed to get a crop of corn or oats from it after two different trials; and I underwent no small share of ridicule from my neighbors, while preparing it for wheat. Remarks like the following were of daily occurrence--"Ah! Seaman you will fail this time." "You have not got your old highly manured fields to exhaust this time by your stimulating stuff!" "We shall now see whether guano is good for anything--this will be a fair test, because the land will not produce anything without it, &c." "You may get about 12 bushels of wheat per acre; we shall see." All agreed however, that if wheat did grow, guano should have the credit for it.