I need not say that we read the articles on manures in the Agriculturist with much interest; for many of us are beginning to learn that it is not only easier and better, but even _cheaper_ to renovate our old lands, than emigrate to a new country and bring new lands into cultivation. C. MCD. * * * * * _For the American Agriculturist._ HINTS ON THE CULTIVATION OF WHEAT. _Buffalo, October 25th, 1843._ THERE are four conditions that modify the value of a wheat crop. One may not only be larger in measure than another, but heavier for the same measure; yielding more flour from a given weight; and lastly, affording a greater proportion of gluten from the same quantity of flour. It is necessary for the farmer to have each of these considerations in view, if he would attain the utmost success in the cultivation of this invaluable grain. My object, in this brief article, will be, to afford some helps to the agriculturist in increasing the ultimate value of his crop. As a starting point, it will, perhaps, be most instructive to inquire, what are the constituent elements of wheat? Sprengel has analyzed both grain and straw, and the following is the result:--1000 lbs. of wheat afford 11.77 lbs. and of wheat straw, 35.18 lbs. of ash, consisting of Grain of wheat. Straw of wheat. Potash 2.25 lbs. 0.20 lbs. Soda 2.40 .29 Lime .96 2.40 Magnesia .90 .32 Alumina with a trace of iron .26 .90 Silica 4.00 28.70 Sulphuric acid .50 .37 Phosphoric acid .40 1.70 Chlorine .10 0.30 ----- ----- 11.77 35.18 This analysis shows an amount of ash far below the average. Davy found 15.5 lbs. of ash in 100 lbs. of ripe wheat straw; and Johnstone, in one variety, grown on a soil abounding in limestone, 16.5 per cent. of ash.