* ie 
No. 33.) 63 
Multiplying by twenty, to get the rate per acre, we note the dif- 
ference between these supposed duplicate plats to be 52.7 bushels of 
merchantable, or 44.1 bushels of total crop of potatoes. 
In E. 4 and E. 7 we have a still better test : 
Met bs 
1882. Sod. 
Li. 4. 
1882. Sod. 
1883. 400 Ibs. phosphate per acre. 
Ear corn, 235 3-4 lbs. 

1883. 400 lbs. phosphate per acre. 
Ear corn, 233 3-4 Ibs. 




1884. 400 lbs. phosphate per acre. 1884. 400 lbs. phosphate per acre. 
White Star Potatoes. White Star Potatoes. 
1-4 potatoes as seed. 1-4 potatoes as seed. 
590 hills grew. 591 hills grew. 
Yield: Yield: : 
Lbs. oz. Lbs. oz. 
678 51-2 merchantable. 784 121-2 merchantable. 
50 01-4 unmerchantable. 42 3 unmerchantable. 
728 5 3-4 Total. 826 15 1-2 Total. 
—=— 
Multiplying by twenty as before, to get the rate per acre, and we 
note a difference of 35.5 bushels of merchantable, and 32.8 bushels 
of total yield between the plats. 
In D. 10 and E. 12, we have another instance of apparant dupli- 
cates : . 
FY: 
1882. Sod. 
210: 
1882. Sod. 


1883. 400 Ibs. phosphate per acre. 
1883. 400 lbs. phosphate per acre. 
Ear corn, 258 Ibs. 
Ear corn, 258 lbs. 


1884. 400 lbs. phosphate per acre. 
White Star Potatoes. 
Single eyes. 
1884. 400 lbs. phosphate per acre 
White Star Potatoes. 
Single eyes. 
573 hills grew. 
574 hills grew. 
Yield: Yield: 
Lbs. oz. . Lbs. oz. 
567 O merchantable. 610 O merchantable. 
30 12 unmerchantable. 24 4 unmerchantable. 
597 12 Total. 634 4 Total. * 
Multiplying by twenty, as before, to obtain the rate per acre, and 
we find the difference of yield between the plats 14.3 bushels of 
merchantable, or twelve bushels in total yields. 
