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Explanation of some Geological Terms used in this Report. 



Anticlinal — where the beds dip contrariwise, like slates on the opposite sides 



of the roof of a house. 

 Brachiopoda — molluscous animals inhabiting' certain shells, with spiral arms, 



serving the purpose of locomotion. 

 Confurmable — beds whose planes or faces conform in parallelism to each other. 

 Conglomerate — rocks formed of fragments of older rocks, usually rounded 



into the pebble form by the action of water. 



Cleavage— -Wnes in slates and other locks which resemble the lines of stratifica- 

 tion, but which run in a different direction. The intervention of a 

 siliceous seam, or sometimes the position of fossils, will determine doubt- 

 ful cases. 



For mation—a. bed or group of beds, deposited at an epoch independent of that 

 during which the beds it lies between were deposited. 



Gomatites — a chambered shell, with a siphuncle, spirally striated, resemblmg 

 the ammonite and nautilus. 



Ichthyodorulites — defensive fin bones of an extinct shark-like species of fish. 

 Igwgenous—Yocks having their origin from fire, in contradistinction to those 



having their origin from water. 

 Lignites — carbonated fossil wood. 



Mural escarpment — perpendicular chfis, presentmga section of beds like a wall. 



Mtcre — the brilliant iridiscent appearance on the surface of some shells. 



Out-lier — A mass of rock detached from the general formation of which it 

 once formed a part. 



Radiaria — -animals including echinites, encrinites, &.c. 



Eock — all beds, whether hard or soft, are, in geology, included in this term. 



Section — when the edges of a series of beds show themselves on the banks of a 

 river, or in any escarpment, as if the formation had been cut through, 

 this is a natural section. Rivers cut through their beds usually by retro- 

 cession. 



Seam—d. thin parting between thicker deposites. 

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