Transactions . ere taken when the apparatushad been some time at rest, and if it were taken immediately after it hadbeen some time in use. To estimate the amount of the correction heused a very thin sheet of mica hung like an inn sign-board, and placedjust outside the path of the anemometer: the deflexion of the mica beingnoted just before the instrument passed the spot. He had no hesitationin saying that this correction cannot be assumed to be a simple per-centage of the velocity, and that its correct estimation is a matter ofgreat difficulty. The following paper by Mr. John J. Sandemau on Th
Transactions . ere taken when the apparatushad been some time at rest, and if it were taken immediately after it hadbeen some time in use. To estimate the amount of the correction heused a very thin sheet of mica hung like an inn sign-board, and placedjust outside the path of the anemometer: the deflexion of the mica beingnoted just before the instrument passed the spot. He had no hesitationin saying that this correction cannot be assumed to be a simple per-centage of the velocity, and that its correct estimation is a matter ofgreat difficulty. The following paper by Mr. John J. Sandemau on The MineralResources of Tasmania was taken as read : — Traiu;. Inif. , vol. xvii., top of page 16L 24 THE MINERAL RESOUECES OF TASMANIA. THE MINERAL RESOURCES OF TASMANIA. By JOHN J. SANDEMAN. Introduction Tasmania being an island, and separated from Victoria by the BassStrait is much cooler than the other Australian Colonies. The rainfallis plentiful, hence the growth of underbrush forms a dense and almost. Fig. 1.—ViKw ok Forests from the Curtin-Davis ProprietaryMine, looking North-westward. impenetrable jungle (Fig. 1). Notwithstanding the numerous streamsand humidity of the atmosphere, this thick undergrowth with its over-hanging forests of great trees will burn with great fury ; thereforeprecautions to iprovide against fire in the vicinity of the mines areabsolute and expensive necessities ; on one occasion, it was only by suchprecautions that the writer saved the works and buildings of a companyfor whom he was acting as general superintendent. THE MINEEAL EESOURCES OF TASMANIA. 25 The prospector deserves admiration and respect in most parts of theworld, but especially so in the bush of Tasmania. No pack-animals canpenetrate the tangled vegetation, and the explorer has to carry his toolsand kit on his back, while axe in hand he hews his way, or on hands andknees crawls along the bed of creeks and streams. When a mine isfound, the fine timber covering the country is o
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