FERTILIZERS. 927 



Soil temperature (lipl. Vninipore E.r/d. Fariit, IS'.iO-l'JOO, Api>.,j)p. 7<i-10a). — Sum- 

 maries of <)l)Ht>rviitinTis at different deptliH during 1897-1900 are given in tables. 



Tlie cultivation of the soil, P. P. Dehekain [lirr. (U'lt. Agron. [JAmvaiii^, 9 

 {1900), No. 9-10, pp. 405-412). 



The r61e of earth-worms in the formation of cultivated soil, V,. Henry 

 {Chron. Agr. Cwitov. VituiJ, 14 (1901), Xo. J, pp. :.'0-2o). 



Acidity of upland soils, H. J. Wheelek and 1>. L. Hautweli, {Rhode Tdund Sta. 

 Bjit. moo, pp. :,".>S-.l..''i \ pJa. :i). — Tliis article sunnnarizes the results of pot and plat 

 experiments on this subject which were begun in 1S94 and have l)een reixirte*! from 

 time to time (E. S. R., 9, p. 937). 



"The general conclusion drawn from thci various fxpcriments herein outlined is 

 that the recognition of a high degree of aciditj-, e\ en in the case of upland and nat- 

 urally well-drained soils, is one of the most inii)ortant guides to the first step which 

 should be taken toward their amelioration. This seems to hold true largely, if not 

 wholly, regardless of whether the benefit accruing from the use of carbonate of lime 

 is attributable to its correcting physical, biological, or (;hemical conditions. The 

 practical importance of this matter, even though it lias been heretf)fore almost 

 ignored or unrecognized by most American and many European agricultural chem- 

 ists, would seem to have been abundantly demonstrated in this and the two former 

 papers ujion the same su])ject." 



Richmond River soils, F. B. (tuthrie and C. K. P>arker {Ayr. Gaz. New South 

 Wales, 11 {1900), No. 11, pj). 1005, 1006). — Analyses of a number of samples of the 

 virgin soils of this region show a remarkable uniformity. The average of the analy- 

 ses is: Capacity for water 52 per cent, organic matter (himius) 16, lime 0.21, potash 

 0.08, phosphoric; acid 0.3, and nitrogen 0.3 per cent. The reaction is neutral to acid. 

 The general treatment of the soils is briefly discussed. 



Note on the soil of County Camden, New South Wales, F. B. Guthrie and 

 C. R. Barker {Agr. Gaz. Nrir Soiith Wale.s, 11 {1900), No. I.', p. 1123) .—The nverage 

 results of examinations of about 80sami3les of soils of this county, which are derived 

 mainly from sandstone, are as follows: Capacity for water 49.73 per cent, organic; 

 matter (humus) 11.23, lime 0.113, iwtash 0.102, phosphoric acid 0.171, and nitrogen 

 0.231 per cent. The soils vary from light sandy loam to clay loam, their reaction 

 from neutral to strongly acid. Forty-two i)er cent of the soils examined were 

 stronglj' acid. 



FEETILIZERS. 



The manurial value of the excreta of milch covvs, ^V. S. Sweet- 

 SEK (Pennsylvania Sta. Bid. 54-, ]>p. 7). — A recoixl wa.s kept of the 

 amount and c-omposition (nitroocn, phosphoric; acid, and potash) of 

 food eaten and of feces and urine excreted and milk produced by 2 

 cows, during the last lU da3^s of 5 periods of 4(> days each. One coav 

 was fed the same ration of 15 lbs. of mixed hay, 3 lbs. cotton-seed 

 meal, 2 lbs. linseed meal, '1 lbs, corn meal, and 1 lb. buckwheat mid- 

 dlings, with a nutritive ratio of iro.tt throughout the experiment; 

 with the other cow the same materials were used but the proportions 

 were varied so that the nutritive ratios were 1:3.9 in the first and fifth 

 periods, 1:6.1 in the second and fourth, and 1:8.7 in the third. 



The total amount of nitrogen, phosphoric acid, and potash excreted 

 by the 2 cows during the whole 5 pei'iods in feces, urine, and milk. 



