Growth of Turnips at Rusper, Horsham. 
115 
Moisture 16-03 
"Water of combination 10*18 
Monobasic phosphate of lime 17 • 39 
Equal tribasic phosphate of lime reuderedK.-,- .f, ,v 
soluble by acid j ^- ' - / 
Insoluble phosphates 5 '39 
Sulphate of lime, &c 45 • 82 
Siliceous matter 5 "19 
100-00 
The ground Cambridge coprolites analysed as follows : — 
Moisture * 87 
Water of combiQation, &c 3-63 
*Phosphoric acid 26-21 
Lime 44-13 
Oxide of iron, alumina, carbonic acid, iL-c. .. 18-02 
Siliceous matter 7-14 
100-00 
*" Equal tribasic phosphate of lime 57-22 
There were thus two sets of experiments, each performed in 
duplicate ; the one set being carried out on the acre which 
had received 10 tons of dung, and the other on the acre that 
received no other manure than the artificials. Two plots 
therefore received absolutely no manure, two received dung 
only, two received dung and superphosphate, two received 
dung and ground coprolites, two superphosphate only, and 
two ground coprolites only ; each of these twelve plots occupy - 
ing exactly one-sixth of an acre. 
The plots were, as far as possible, arranged so as to diminish 
errors incidental to inequalities in the land, which sloped some- 
what towards the south-east. A hedge runs along the north 
side of the field ; but a good headland intervened between it and 
the experimental plots ; while the nearest hedge on any other 
side was 40 or 50 yards distant. Hence the exposure to 
weather was tolerably free, and pretty much the same over the 
whole space. 
The annexed diagram (page 116) shows the arrangement of 
the plots. 
The manure for each plot was mixed with a considerable 
bulk of sifted earth, and sown broadcast on June 10th, and 
harrowed in, immediately after which operation, the field 
was drilled with 3^ lbs. per acre of Carter's " Prize- Winner " 
Swedes. 
Notes of the appearance of the plant were made by 
Mr. Parbury on July 2nd, July 30th, and August 10th. These, 
however, are hardly worth recording in detail here, as the 
I 2 
