226 
1000 lbs. of sweet potatoes takes from the soil 74 lbs. of these ingredients. 
GEOLOGICAL SURVEY 
Analysis of the Sweet Potato— By Prof. Shepard. 
~~ 
100 parts of the undried potato gave a little over | per cent. of ash, com- 
posed of 
Carbonate of potassa, (with traces of soda)----- - 60.00 
Phosphate of lime... 2652.2 5_en. seep oe 14.57 
iPhosphateiot magnesiae=jo- 52 sss-ese amen 5.60 
Garbonate’ of; limes 2a eee a ae eee ROO 
Carbonate of magnesiateeesa- 2 oases se esse 3.80 
Chloride: of potassium=s= ee =.552 25 ose e 4.60 
Sulphate) of potassasea=vsosaae = - <= = - ae 4.35 
Silica, |. 25 see eee ee ee orci ee epee .70 
Chloride of, caleiumess 222225252 
eulphate of magnesia and lime- --- RA touse [luitoo 
ZaWhbhes heey ae a ee = Sea eo 
Oxides of manganese, in traces-.- - == 
100.00 
100 parts from the ash from the Sweet Potato tuber contains the follow- 
ing elements. 
1D Oba SSasesn ee oe eee eae eee eee 43.59 
Phosphoricacids— = 22222 sco ssaseeeeeee se 1108 
IGN eeeea eR Es So ee ee en Ses 10.12 
Magn esins soe osetia = ai Se eee 3.80 
IBOlaSSIUM= =e Oe ee eae Lee ne eee 2.42 
@hiorine= 32 se a ees ae ee 2.18 
Sulphuric/acidoa: 22528 oo seee= ee ates eee 1.90 
75.09 
Analysis of Wheat.— Bousingault. 
100 parts of the dry grain gave 2.4 of ash, and of the straw, in the same 
state, 7.0, containing— 
Grain. Straw. 
Phosphoriciacid= S22. seeenaes = =ssosns cW( (Oe ae aii 
Sulphuri¢e acid S22 ee eases ees 10 = lio 
Canbonicacidees = aanse ano Se eeeea —.--. = 
(Chlorine.2 82 See ee = eee traces. -_- 0.6 
PinMete sac nee oe ae DOs Sea 
Magnesiace = <> estan nos Soe sale HSS ee ase 5} 0) 
1G tans Lies te ere te, ae ee 29 beets) 
S00 ae ee ee ie eo traces. .. 0.3 
Silicae eee Seas. Le ee 6.3..-<67.6 
IMUM ina eee eee waa an pees eee eae —..-- 1.0 
Moisturesandslosss 2-2. 2)2- oe eee Gees Se} 
100.0 100.0 
Analysis of Oats —Bousingault. 
100 parts of the dry grain left 4.0 of ash, and the straw, dried, gave of 
ash 5.1, composed of— 
Grain. Straw. 
Phosphoricwacidtas = seeee ees osmecce [AOS SS m3! 
Sulphuric acid) ees eeei ea a Ose 
Carbonicwacid ==. eaeete nes nce ey rey She) 
Chiorine®= Se sae eee esc oeee se 0:52 22 meer 
Wiimves 42 as ee eee 2 ee ee 
Magn esial . 522652 ewe eae ae Lahaaae (2:0 
POtAB RS ee ee ee ne ee ne ae 12.9.__-24.5 
“—* 
