Artijicial Manures for Swedes. 
c. The portion collected on the first sieve consisted entirely of 
fragments of limestones, and that of No. 2 nearly altogether of 
similar but smaller fragments. Both were rejected in preparing 
a lair average sample for chemical analysis, and the portions from 
Nos. 3, 4, were powdered in a mortar, jiassed through the inch 
sieve, and mixed with No. 5. 
Before submitting it to chemical analysis, the average sample 
was separated by washing into the following portions : 
100 parts of average soil contained — 
Oraranic matter and water of combination .... 6 "339 
Burned de[)Osit after standing 5 minutes .... 69*GOO 
10 „ .... 3-880 
„ _ „ 15 „ .... 3230 
Remaining in suspension after standing- longer than 15 
minutes lG-951 
100-000 
1 he first deposit consisted of a calcareous sand, whilst the 
second and third were coarse clay, and what remained in sus- 
pension fine clay. 
The general composition of the soil can therefore be expressed 
as follows : — 
Organic matter and water of combination 6 • 339 
Clay 24-061 
Calcareous sand 69 ■ 600 
100-000 
2. Chemical Examination. 
On analysis of the average sample prepared as described above, 
tlie following results were obtained : — 
100 parts contained — 
Organic matter and water of combination .... 6 '339 
Oxides of iron and alumina, with a trace of phost)horici „ 
acid ' . • J 
Carbonate of lime 54 -566 
Magnesia trace 
Sulphuric acid ditto 
Chlorine ditto 
Potash and soda 1-032 
Insoluble siliceous matter 28-947 
100-195 
It will be observed that carbonate of lime greatly preponderates 
in this soil, and that the proportion of alkalies is but small, 
whilst mere traces of phosphoric and sulphuric acid were found 
in it. Calcareous soils of such a composition are generally un- 
protluctive. 
The experimental field was carefully measured out, and divided 
VOL. XVI. H 
