54 GEOLOGICAL RECONNOISSANCE 
First. By treatment with hydrochloric acid. 
Hygrometric water expelled at 300 dege ++ +--+ reer seer te erence 3.15 
Silicates insoluble in hydrochloric or nitric acid-+-++++-++++e++- 64.68 
ATU NA e Goes COS Aekwed eee Shee dareawe Seow swine de tee ween 10.00 
Peroxidesol TiO Nw eiiie 8 hoe aie ok ere a ee Awe Meg ae wa Ree es 7.68 
Teri Oss esowaiwo Sad oreo hs oi cents eeatigf Sea sear eee va thew hw rane Serie Wat eMaLA ead Glia Sw 8.65 
Magnesia Bee Syn nt Henn, ata apa oa dni) ea sigh “asta carat cay Beta Gh WSS ee ats, ed 1.50 
Pa Cerslna oa ess coe eae lia aa EG es ordeal eaten aan le RR craete 945 
Soda sieve Waa Geese Hee he Reena Ga see Aare 650 
Manganese Les oe eek SESE Oe EE ROR ERE AE KE ORR HERO ROE RE .080 
Sulphuric LCV ease iaseng Giese eitate bighe. seas lo ntene Wiles Ore ete Oe “Maree ee Dead ea .360 
Phosphoric acids +.-eeeee cece eee e eee tence cece nent e teens 015 
CGarbGniG: ACW ss sa sis saps we wh eis iia Sere alee SEW Sra OA SDS Who de acer .050 
GTi citi ea tancsact ssertsendealirala eon catsescdakevans amacsegambaa etait nfs oho manta! 198 
Organic matter, water of hydration not expelled at 300 deg., and 
AWVATHTO TLL oce: a ciouacecanciiin haale dae ow odie ore edi. aseies Hea toudonr ar duidoaey auras 2.428 
INGEEIC, ACId a TORS: a sicsi oi sees See ep ss Bled Ritowne ag oe oes, Sew a Somat 4.614 
100.000 
The saline matter extracted by water, was equal to 7 per cent of the 
whole, and contained the following bases and acids: 
Alumina tinged with irom... esse eee ec cee eee cece eee eens 0.32 
Lines: cece sxe sated Bese Mad ha eet ang WAtwha Sa ewido 0.76 
Magnesia «creer cece ee eee eee e ieee eee ee ee tne eee eee ees 0.40 
Potash, cae bow ssies ascii ees TPR e ee een eee ee eens 0.282 
IS OLE iseior ti coiig ade a ihe Ree SE ees aig ea ea WRN Raa Ce lis Ladiw acolo el amcne's 0.068 
Chlorine seis vei o05 Se eneuiew eed dear ours alee wa eisk eaten eee mages 0.196 
Sulslinmiy welds sce ssen token gen Wee beneeenaed ates Beee aes aua 0.360 
Nini! <aeidisi0hi ded bee Reraienaracntewn el Wes date M SReed wher sleus acer ors 83.210 
Water of crystallization, loss and organic matter.+...-...+...- 1.404 
7.000 
Another of the nitre earths formed in Bean’s cave, is a very regularly 
laminated moist earth, variegated with thin bands of dark and light red 
of a very fine texture, and capable of being divided into thin. flexible 
laminae, like sheets of dough. 
This nitre earth, when air dried, yielded by analysis about 1.3 per 
cent of nitric acid, which when converted into nitrate of potash or salt- 
petre, by the usual process of leaching and saturation, with carbonate of 
potash, or the ley from ashes, would give about 2.5 per cent of salt- 
petre. 
