DiriSIOy OF CHEMISTRY S9 



SESSIONAL PAPER No. 16 



Laboratory No. 1J,102. — From Clydesrlale, Antigonlsh Co., N.S. In powder and 

 lumps of considerable hardness; resulting probably from disintegration of rock. 



Analysis. 



Moisture 3-81 



Carbonate of lime 85-00 



Mineral matter insoluble in acid 8-54 



Loss on ignition (organic matter, etc.) -IS 



Undetermined • 2.47 



\ 



100.00 



This is a calcareous deposit of fair quality. For its greater efficiency, however, 

 crushing the whole to a condition of coarse powder is necessary. 



Lahoratory No. 16278. — Marl from Muldoon, Que. ; stated to exist in very 

 large quantities as a bed in an old lake bottom. Received as a putty-like substance 

 of a light-grey colour and showing a large number of shells. It dries to an easily 

 crumbled mass of a dark-grey, earthly appearance. It is almost entirely soluble in 

 dilute hydrochloric acid, with brisk effervescence. This examination shows it to 

 be marl of very good quality; it contains very little foreign matter. It would 

 undoubtedly prove an effective source of lime for all classes of soils. 



Laboratory No. 16523. — From Armstrong, B.C. Greyish-white, granular, almost 

 completely soluble with brisk effervescence in dilute acid. Tnis is a calcerous deposit 

 of very considerable agricultural value. It consists essentially of carbonate of lime 

 and is probably derived by deposition from waters rich in that constituent. , The per- 

 centage of foreign matter in the deposit is very small. 



Lahoratory No. 16525. — Also from the neighbourhood of Armstrong, B.C. This, 

 though containing a fair percentage of carbonate of lime, is distinctly inferior to No. 

 1C523, there being present a large proportion — approximately fifty per cent — of inert 

 mineral matter. 



Laboratory No. 1653Jf. — From Shuswap, B.C. This material, described as a 

 ' white .sandy deposit ' occurs as a bed near a pond and is covered with about a foot of 

 soil. As received it was of greyish-white colour, of earthy appearance and quite 

 friable. It dissolves completely and readily in dilute acid with brisk effervescence, 

 and furnisb.es evidence of being essentially carbonate of lime. It is to be considered 

 a marl of excellent quality. 



Lahoratory No. 1690]f.. — From Enderby. B.C.. stated to occur as a deposit resulting 

 from the evaporation of seepage water passing through strata of calcareous rock. 



Analysis. 



Moisture 7-75 



Organic and volatile water 2.03 



Mine-al matter insoluble in acid 32-07 



Oxide of iron and alumina 1-76 



Carbonate of lime 5-5-46 



Sulr^hato of lime .25 



1 hosphcric acid traces. 



Undetermined 148 



100.00 



This material, air-dried, it will be seen, contains only a little more than half its 

 weight of carbonate of lime and therefore cannot be classed as a marl of high quality. 

 16-7J 



