U292, 293] MARLS OF CLARKE. I7f3 



GREENSAND MARL FROM GARLAND'S CREEK. 



Insoluble Matter (Silica and Sand) 2L657 



Soluble (in NaO CO 2 ) Silica 24.224 



Potash 1.717 



Soda 0.465 



Lime 14. 1 85 



Magnesia 12 476 



Brown Oxide of Magnesia 0.403 



Peroxide of Iron 13.020 



Alumina 7.751 



Phosphoric Acid 0.327 



Sulphuric Acid 566 



Carbonic Acid 12.492 



• — — ^— 



99.556 

 This marl is quite remarkable for its completeness as a mineral manure in 

 all respect*, containing as it does, large amounts of every essential ingredient 

 (excepting chlorin?, which may, however, be present also); being so constituted 

 as to be eq laliy well adapted to light and heavy soils, and without any danger 

 of over-dressing. It is, thus far, the most complete mineral fertilizer I have 

 found in the State. 



It constitutes about two feet of the bluff at the bridge, being the highest 

 stratum visible below the soil ; the lowest five feet consist of a sandy material, 

 also rich in greensand, yet not as much so as the upper stratum. Roth proba- 

 bly crop out on the Chickasawhay near or above the mouth of Garland's Creek, 

 and it is possible that the upper stratum may there be found of greater thick- 

 ness. It would pay well for transportion even to a distance. 



I have received, through the hands of Gov. Pettus, a specimen of marl nearly 

 resembling that of the upper stratum at Garland's Creek, found near De Soto 

 Station, Clarke county, on the M. & . R. R. 



2\U. In the upland piairies between Garland's Creek and Sack 

 Creek, wo again find materials somewhat similar to those of the 

 UcNntt Hills near Jackson (^1-04); Suck Creek itself has excava- 

 ted its channel in a solid bed of bluish-white marl, which contains 

 only Hue sand and bears no small resemblance, at first sight, to the 

 freshly dug ''Rotten Limestone" of the prairies of Monroe, etc. 

 I have not as yet analyzed this marl — it contains small grains of 

 greensand, and while it is certainly very rich in lime, it may con- 

 tain notable amounts of other useful ingredients. 



Similar materials occur all along on the road to Gen. Trotter's 

 plantation. At the latter place, there is quite a variety of marly 

 materials, but on the whole they are poor in greensand grains and 

 consequently in potash ; consisting chiefly of lime and sand. 



The marl in the deep gullies, and the lower portion of the bluff on the Chick- 

 as iw ha v River, is most sandy, bluish, and greatly resembles the material seen 

 on S ic!< Greek ; while higher up on the hillsides, we find outcropping lodges of 

 white limestoi e (precisely similar to that of the SlcNutt Hills), 

 altern iting with soft strata wh eh appear to be the less sandy and richer in lime 

 and city tie higher up they occur; none of them, however, containing any 

 notable amount of greensand. 



•_ I ). iVnr peveral miles above and below the plantation, these and 

 similar marls crop out on the Chickasawhay Kiver. The forth er 

 southward, however, the more clayey and compact they seem to 



