436 AGRICULTURAL REPORT. 
In the Department of Somme an experiment on beet-roots afforded, 
(according to E. Marchand, in the Memoirs of the Imperial and Central 
Society of Agriculture of Franee, 1866,) in roots: 
With 50,000 kilograms of farm manure---.-<.--.---22 -----------. 35, 000 kilograms. 
With complete manures <2. ose aeos ees cae mean aan as oe eae 51, 000 
With complete manure, without lime....-....-....--.--------+-- 47, 000 cs 
With complete manure, withont potassa..-....-..-.-..------.----- 42. 000 rn 
With complete manure, without phosphate ---...----.--.-------- 37,000 es 
Witk complete manure, without nitrogen....-....-...-8--.-----. 36, 000 “ 
Land without manure i262H Ss teers eo ces i Le tebe meee ee 25, 000 ae = 
These results accord with the preceding. 
An experiment made within the tropics, at Guadeloupe, on the sugar 
cane, yielded per hectare of canes, stripped of leaf— 
RUD ICOMIpIGle SHAN IITO se ee oes b ea eee = mete ee ies ee 57, 600 kilograms. 
With complete manure, without Bie) cect We 0 enya 50, 000 te 
With complete manure, without potash (= ).-Se2-' 2 te eS ble Se 35, 000 fe 
With complete manure, without phosphoric acid....-...--..----- 15, 000 Z: 
With complete manure, without nitrogen..---..-..-.-----.------ 56, 000 “i 
ae AWA UO b MRARULO epee eos soe oe ovis a aee pine e ea eee 3, 000 4 
This last experiment points to land already endowed with enough of 
assimilable nitrogen, but demanding the active intervention of potash 
and phosphoric acid to give abundant harvests. 
By subjecting small plots of land, as specimen types of extended cul- 
tivation, to trial essays, Ville easily arrived at the power of production 
of the land and its particular need of each fertilizing agent to put it in 
a condition to yield full crops. This, in fact, is what is going on every- 
where in Germany at the various agricultural experimental farms, (ver- 
such-stationen.) The repetition and extension of the plan might be a 
duty of the agricultural colleges of this country. That Ville has dis- 
taneced al] other experimenters in showing the particular value of 
each mineral salt in increasing the produce of the land, there is no 
doubt; and E. Marchand attests the value of the influence of Ville’s 
teachings upon various soils of France. In the Department of Drome 
a rocky hillside was grubbed for experiment, and it gave, without ma- 
nure, 24 hectoliters of wheat—scarcely the seed used. With the spe- 
cial wheat manure, it yielded 30 hectoliters. Ville’s formula for this 
wheat manure is: 
Kilograms. Value in franes. 
ACIdmnOspuaLE OF AMG) LW =. =~ 2 -oio et ce Jobe cok ise sees *» 600 96 
ThE eal UD SENS SES coos Sas gSOO - spe Geos so eSoeeo a Ic 400 248 
(CAE ES oh gee SECs RR IS Sie Se a ee erase 54 255 102 
Sek ah UTE pa 22 ER ak A ay 8 SE ae 350 7 
UPC RAS ach 6 oe Ee ee ee 90S See ae 5 oe ea do sc 453 
In Champagne, uncultivated land, not worth 170 franes the hectare, 
yielded, with 1,200 kilograms of this special manure, 33 hectoliters of 
wheat; with 100 cubic meters* of farm manure, it produced only 13 
hectoliters. Land producing without manure only 24 hectoliters of 
grain, gave 8 hectoliters under the influence of 40,000 kilograms of 
good farm manure, and 28 under the influence of the wheat manure. 
Masson and Izarn, at Evreux, produced, with the complete manure, 40 
hectoliters of wheat, when, with 30,000 kilograms of manure, they ob- 
tained only 19 hectoliters. Land producing 8,000 kilograms of potatoes 
when manured with 35,000 kilograms of barn- yard manure, gave 16,000 
kilograms, or exactly double the product, with the complete manure. 
* Meter, 1.09363 yard in length. 
