19& APPENDIX. [March, 



The straw of wheat is generally reckoned to be about double the 

 weight of grain — an acre producing twenty-four bushels of wheat of 

 ordinary quality, may then be presumed to yield about twenty-six hun- 

 dred weight of straw. This rule, however, is not certain. 



Some exact experiments as to the relative amount of straw to wheats 

 have given the following results ; avoirdupois weight. 



No. I. gave 3 lbs. 3 oz. of wheat ; 3 lbs. 9 oz. of straw. 

 " II. " 2 lbs. 12 oz. " ; 3 lbs. 4 oz. 

 " III. " 6 oz. more straw than grain. 



" IV. " 4 lbs. 4oz. " ; 3 lbs. 13 oz. of straw. 

 " V. " 2 lbs. 9oz. " ; 3 lbs. 1-5 oz. 

 " VI. " the grain 7 oz. more than the straw. 



I insert also two other tables, exhibiting the results of other ex- 

 periments on the values of different wheats. These from the Jour- 

 nals of the English Agricultural Society. 



References to Table II. — " Proceeding thus, the whole ground was 

 finished, and then one grain of wheat was dropped into each hole. The 

 rows were thus exactly 6 inches apart, and the grains in the rows 

 were 3 inches from one another. The regularity with which the plant- 

 ing was performed was thus mathematically accurate. The ground 

 was 67 feet in length; and 3 rows of each variety of wheat were plant- 

 ed, except the first and last numbers, of which there were 4 rows. The 

 outer row of each of these, however, was not taken into account, be- 

 cause their roots had a much greater extent of ground for their growth 

 than the others, whose roots touched one another all round. The 

 end plants of each row were also rejected for the same reason. Sixty- 

 six feet in length of ground were thus taken up, and 3 rows of each 

 variety occupied in width H foot : the ground occupied by each va- 

 riety was thus 99 square feet, the 440th part of an acre. 



(On page 198, is a tabular account of this experiment.) 



The seed from which the first 10 varieties were raised, was carefully 

 selected from specimens of each obtained in the ear. The others 

 were from samples, and here, also, the greatest care was taken that 

 the seed from which each was raised, should be the best and plumpest 

 that could be obtained. 



The first four columns need no explanation beyond what is given at 

 the head of each : the fifth shows the number of grains lost from casu- 

 alties. If the frost had been the only agent in the destruction of so 



