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and these groups at intervals of one hundred or more feet apart. 

 As they descend, they apparently stop at the blue limestone, but, 

 on careful examination, some indication is generally found of 

 their passing through this rock, and being continuous below, though 

 the fissure may have only the thickness of a knife-blade. They 

 have been generally supposed by the miners to cease at the blue 

 limestone, but Mr. Daniels has not only traced them through this 

 rock, but has actually found them in the buff-colored limestone 

 below, where they have been worked for ten years, without the 

 miners being aware that they were below the blue limestone. 

 He considers the buff-colored limestone equally productive with 

 the strata above, and advises sinking below for it. The lower 

 magnesian limestone also contains metal, which was not believed 

 to be the case before this survey. 



In the perpendicular veins the ore is free from vein stone, but 

 this is not the case in the other veins, especially lower down. 

 The width of the veins at the surface varies from one to one hun- 

 dred and fifty feet, although the ore is not perfectly continuous 

 the whole distance. The ore has been worked a mile and a half 

 without interruption. It is principally sulphuret and carbonate, 

 with a little sulphate and phosphate. 



Prof. H. D. Rogers stated that Mr. Daniels had shown him 

 a mass of galena, containing shells which were mere porous 

 masses filled with the ore, and showing that the fossil was 

 the oldest. He thought that, in some instances, the ore might 

 have been introduced by sublimation, and then solidified 

 amongst the fossils. He also thought the occurrence of 

 Limnese so high, was extraordinary, and contained the key 

 to some interesting events. 



The President stated that it was remarkable that, as yet, 

 so few remains of the Fossil Elephant had been found. 



The teeth are comparatively common, although often in a 

 state of partial decay ; but no perfect skull of the elephant 

 has as yet been discovered, and it is very desirable for geolo- 



