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THE CANADIAN JOURNAL, 



A REPERTORY OP 



INDUSTRY, SCIENCE, AND AET; 



AND A RECORD OF THE 



PROCEEDINGS OF THE CANADIAN INSTITUTE. 



TORONTO, UPPER CANADA, JULY, 1854. 



CONTENTS : 



On the Periodical Rise and Fall of the Lakes. By Major 



Lachlan, Montreal 493 



Description of the Platometer, an instrument for calculating 



the Area of Figures drawn on Maps. Invented by Mr. 



John Sang. (With plate) 305 



Process for Printing copies of Plants, Materials, Lace, &c, 



from the originals, styled (" Naturselbstdruck") Natural 



Printing Process 307 



On the Consumption of Smoke. — Experiments with Jukes's 



Patent Furnace. By Mr. A. Fraser 307 



On Preserving the Balance between the Animal and Vegetable 



Organisms in Sea Water. By Robert Warrington 308 



Sang's Platometer, or Self-acting Calculator of Surface 310 



Xotices of Books 311 



The Greenwich Observatory 311 



Miscellaneous Intelligence : — 



On the Gluten of Wheat 312 



On the Proximate Principles of Bran of Wheat 313 



On forming Vessels of Gold by the aid of Phosphorus 313 



New Planets 313 



Proportion and Properties of Metallic Aluminum 313 



Detection of Manganese 313 



Zinc applied to Ship-building 313 



Glaciers 313 



Monthly Meteorological Register for Toronto 314 



" " " Montreal 315 



" " " Quebec 316 



PUBLISHED BY MACLEAH & CO., T0E0NT0. 



FOR THE 



COUNCIL OF THE CANADIAN INSTITUTE, 



AND FOR SALE BY A. H. ARMOUR & Co., TORONTO ; JOHN ARMOUR, MONTREAL ; PETER SINCLAIR 

 QUEBEC ; JOHN DUFF, KINGSTON ; AND JOHN GRAHAM, LONDON, C. W. 



AU Communications to be addressed to the Editor of the Canadian Journal, Toronto. Remittances to be 



sent to the Treasurer of the Canadian Institute. 



