xl ANALYSIS OF SOILS. 
The organic matter, as deduced by the two methods above explained, will, therefore, stand thus— 
In 100 parts of F by first method 1.75, by second 1.33 
«“ E «“ 1.90, « 2.48 
« H «“ Q41,  « 2.69 
« G « 2.16,  « 2.91 
«“ c «“ 266, « 2.95 
« D «“ 3.33, « 4.08 
In order to obtain additional information respecting the powers af attraction possessed by the soils for water, 
comparative experiments were made to determine their saturating points, 7. e. how much these weights would be 
augmented, after being thoroughly drenched with water on filters, the weight being taken, in each instance, as 
soon as all dropping from the filter had ceased. The following numbers express the saturating capacities of 
the soils for water. 
Rett _ ae 605 (ey ete 325 1 Sapna eee 305 
(ea tete oes 480 (ee By re. 2: ee 293 
Drees 342 Hee feo 315 Pure sand 235 
Some experiments were also made with a view to ascertain their comparative rates of drying from a condition 
of saturation. The following table embraces the results obtained under this head : 
48 parts of K when saturated took up 60.5 of water, and lost in 16 hours 21.5, 
& lf 3: 48.0 0. a: f 19.3, 
« C «“ 32.1  « «“ «“ 18.1, 
19 H 14 31.5. 33 (1 “ 20. iF 
ce F u 29.3 & s a 18.3, 
3 Pure sand “ 23.5 «“ a “ 15% 
By deducting the water lost in drying, from the amount absorbed in saturating the soils, we ascertain the 
quantity left adhering to each— 
The 48 parts of K will have 39.0 of water. 
é ute diy  2BWTGe) ae 
“ (} (74 if 4, 0 “ 
« H « 120  « 
« By 110. « 
& Pure sand 6.8 “ 
An acquaintance with these facts will aid in forming an estimate of the advantages which one soil will pos- 
sess over another in permitting its plants to recover from the effects of excessive rains. I next entered upon 
the analysis of the mineral constitution of the soils. 
1. Composition of C. 
Silicay:t¢ | Se Jeet tn Lae A ne Ee ss el ee 92.57 
JMlumina ga 62 222 we bee ae. Ee See Se ee fe ee ee 1.70 
Per Oxide of lron, with a feeble trace of Carbonate of Lime, and of 
Phosphatevof limes: Sates ee Fe ee Sa a 0.70 
94.97 
Water of absorption and organic matter,.-.---.-...-.--------- 5.03 
