47 



I iihli- 4>.—I.inii- ill the diffrrnil scclioiis. 



Depth 

 Inches 



1— 6 



7—12 



13—24 



25-36 



A verace 



1—36 



1— 6 



7—12 



13—24 



25—36 



.'\verage 



1—36 



1— 6 



7—12 

 13—24 

 25-36 

 Averasre 



1-36 



CarriiigtDii silt loam 

 Kansaii I. ate Wis. 



I'aiKn silt loam 

 Kansaii I. ate \Vi 



per cent per ceni 



1. ToTAI.. 



Carrington loam 

 Kansan Fate Wis. 



1.13 

 1.14 

 1.02 



0.93 

 1.03 



T.I M K 



0.10 

 0.10 

 0.07 

 0.04 



0.07 



1 03 

 1.04 

 0.95 

 0.89 



0.96 



1.24 

 1.18 

 1.24 

 2.08 



1.51 



2.34 

 2.08 

 1.55 

 1.92 



1.80 



1.97 

 1.84 

 1.86 

 2.16 



1.97 



1.06 

 92 

 0.97 

 1.02 



0.99 



CARm)X.\TE (coniputocl troni CO:: content.') 



0.10 



0.07 

 0.16 

 1.36 



0.40 

 075 

 OOS 

 l.Of) 



0.65 

 0.6' > 

 6R 

 1 J3 



0.53 0.49 89 



3 T.i.\rE .\s Silicate. 



1 14 

 1.11 

 1.08 

 0.72 



0.97 



104 

 1.83 

 1.47 

 0.86 



1.27 



132 

 1.15 

 1.18 

 0.83 



1.08 



0.09 

 07 

 0/ 

 O.(H') 



0.07 



0.97 

 0.85 

 0.90 

 0.96 



0.92 



1.09 

 97 

 0.95 

 1.07 



1.02 



•■).'/) 

 08 

 ( 05 

 ti.07 



0.07 



0.99 

 89 

 0.90 

 100 



0.95 



Discussion. With one exception the amount of total hme in the 

 surface section is jjfreater than in the second. Plant roots feedino- in 

 the lower levels carry this constituent into the aerial parts, which, on 

 death and decay, leave behind in the surface laver this translocated lime. 



On the Kansan the two Carrinpton .series ha\'e lost the more 

 readilv .soluble lime compounds to a denth of more than three feet. 

 The Carrinofton silt loam on the I-ate Wisconsin still retains a consid- 

 erable amount in the third foot-section, but with the Carrinqton loam 

 the leachincf has been as extensive as on the Kansan. 



The poorly drained condition of the Farg"o silt loam has prevented 

 anv serious leaching" on this type. This is well illustrated by tal)le 42. 

 part 2. which shows every section well stipplied with carbonate with 

 the exception of the second foot on the Kansan. 



On the Kansan lime in the form of carbonate has been leached out 

 to a depth t^-reater than three feet with both the Carrinqton silt loam 

 and the Carrington loam. On the Tate W^isconsin the same is true for 

 the latter type, but there is still an apprecial)le rpiantitx in the third 

 foot-section of the former. 



On each t\pe the average amount of lime as silicate is very simi- 

 lar on both drifts with the exception of the Fartjo silt loam, where it is 

 sliq-htly the higher on the Kansan. There is a general decrease in the 

 amount of this from the surface downward on the prairie types, while 

 on the forest t\'pe there is but little variation in its vertical distribution. 



