64  [AssEMBLY 
In these carefully arranged duplicate plats we note no duplicate 
yields ; thus, per acre: 
Difference. 
Merch. Total. Merch. Total. Merch. Total. 
bush. bush. bush. bush. bush. bush. 
gel Sersie ss corse 182.1 190.1 Be es 98.1 110.9 84.0 79.2 
| Oy oar. Se Resi Ae 226.1 242.8 | HSL fies. eae ty 261.6 275.6 35.5 382.8 
BirelO es .h cco 189.0 190.2 | pas Psp eam ayo 203.3 211.2 14.3 12 0 
It is quite evident, therefore, that for potatoes, the equivalency of 
the preceding crops as given by our tables is no indication of equiva- 
lency in the crops harvested the present year. 
In D. 18 and D. 14 we might be supposed to have duplicates in 
1884, as in 1882 the crop was mixed cow-peas broadcasted and - 
plowed under, in 1883 the same, with the addition of 400 pounds 
phosphate per acre. In 1884 single eyes were planted, cut from 
the seed. half and the stem half of the potato, 400 pounds of phos- 
phate per acre applied, and treatment in other respects alike. As 
we have shown elsewhere, potatoes cut in this manner may be con- 
sidered as equivalents. The yield was, in pounds: 
Merch. Unmerch. ‘Total. 

No. hills. Lbs. Lbs. Lbs. 
ESTES ea wis et See 539 515.25 18:25 eGgeao 
ie Np (0 BAP ete ene rane ae Roe y FeO 556 585.0 98.25 6138.25 
Difference>. «.. ... at ae) gees 17-3 698T5 10.0 79.75 
Bush. Bush, Bush. 
Or GLO s,s ee A is ee 93.2 3.3 26.5 
Correcting to even number of hills, we have: 
Merch. Unmerch. Total: 

_ Hills. Lbs. ’ Lbs. Lbs. 
RM ee Ns kk aan Ree te oe 556 530.8 19.4. 550.2 
eM ere ts es ie Cee 556 585.0 28.25 613.25 
BOS TEPONC Riots oles © se ke Pee ee 54.9 8.85 63.05 
Bush. Bush. Bush. 
ALOT ACTOUEE Mbit tit ake Wa Got cei 18.0 2.9 21.0 
We have here, per acre, the difference between the actual and 
caleulated differences, or five bushels of merchantable, or five and 
one-half bushels total, which may be ascribed to difference in num- 
ber of plants, while there remains a difference of eighteen or twenty- 
one bushels to destroy the appearance of equal fertility of the land. 
In D. 2 and D. 4 we have duplicates, apparently, in 1883; let us 
examine the records: 3 
1882. No fertilizer. Corn, in hills, five by five feet. Product 
not weighed. , 
1883. Four hundred pounds phosphate per acre; 198 pounds 
sound corn on each plat. 
