3 



PHOSPHATIC GUANO, 



FROM THE ISLAND OF SOMBRERO, West Indies, 



THE RICHEST DEPOSITE OF PHOSPHATE OF LIME KNOWN TO THE WORLD, 



By a careful analysis of an average sample of different cargoes, the annexed eminent Chemists 

 have found this remarkable deposite to contain of Phosphate of Lime, as follows: 



By Professor HAYES, - Boston, - of 1st Sample, 89.60 per cent. 







2d 



89.20 





REESE, - Baltimore, - 



1st " 



85.14 



a 





2d 



86.60 







3d 



72.04 







4 th 



72.04 





CHILTON, - New York, - 



1st 



86.34 



u 



'» _ << 



2d 



84,92 



tt 



PIGGOT, - Baltimore, - 



1st 



76.85 



a 



HTJSON, Liverpool, England, - 





80.20 



it 



DECK, - New York, - 



1st 



88.00 



a 



" of a selected specimen, 



ii 



98.25 



u 



M.AUPIN & TUTTLE, University of V 



irginia, 



85.16 



WILLIAM GILHAM. Military Institute, Lexington, Va., 83.40 



Thus proving it to average the richest deposite of Phosphate of Lime known to the world.'. 



Pure Bone Dust contains but 55 or 56 per cent, of this important Phosphate; hence a compari- 

 son of the relative value of the two, will at once show which is the most desirable for Agricultural 

 purposes. 



Guanos are of two distinct species — those in which the Phosphates of Lime predominate, as 

 in Sombrero, and others; and those in which Ammonia predominates, as in the Peruvian. Both 

 experience and theory establish the fact, that Ammonia and Phosphate of Lime are essential in- 

 gredients for a general fertilizer, and, consequently, for general purposes, a proper mixture of the 

 two is recommended: whilst the Peruvian and other Ammoniated Guanos, are mere stimulants or 

 quickencrs of the soil, the Sombrero and other Phosphatic Guanos, are permanent fertilizers, but of 

 slower action and less perceptible effect, the first year, unless aided by some stimulants. Hence 

 the great importance of combining the two in proper proportions, which, if done, makes the best, 

 most convenient, and economical fertilizer known. Assuming the cost of Peruvian Guano at -$62, 

 and Sombrero at $34 per ton — and with one-quarter of the former, mix three-quarters of the 

 latter, (which proportions are recommended 'by experienced Farmers,) it gives, at a cost of about $41 

 per ton, a fertilizer far more valuable and permanent than the Peruvian alone. The agriculturist 

 need only be reminded of the nature of the two predominating ingredients, in the different species 

 of Guano, to enable him to understand the proper mode of its application. Whilst Ammonia (in the • 

 Peruvian) is liable to evaporate or rise, Phosphate of Lime (in the Sombrero) is heavy, and liable to. 

 sinkjbelow the reach of the roots of plants Therefore it should be either deposited in the hall, or 

 drill with the crop, or used as a top dressing, in the proportion of from 200 to 400 IBs. to the acre,, 

 according to the wants of the soil. If used as a top dressing, the Spring is the best time, when 

 the crop is assuming its strength and sustenance, as, at that time, the benefit of the Ammonia is 

 less likely to be lost than if used in the Fall or early Winter. 



EDMOND BAYEHPORT & CO-, Agents. 



RICHMOND, Virginia, 



Jg^flt can also be obtained of A. GARRETT, E. WORTHAM & CO., DUKE & HUTCHIN- 

 SON, and E. H. SKINKER, Richmond. Feb. 1, 1858. 



CHEMICAL ANALYSIS OF SOILS, etc. 



The xmdersigncd is prepared to analyse 

 SOILS, GUANOS, ORES, MINERAL WATERS, &c, with promptness and accuracy. 



Agriculturists and others desiring such examinations, may have them made by forwarding 

 samples 1o the following address. 



IX K. TUTTLE. 



Doctor of Philosophy of the University of Goettingen ; Licentiate of the University of V^a. 

 Analytical Laboratory of I he University of Va., Feb. 1st. 1858. 



