SIR,—I have the honour to intimate to you by request of the Governor-General (Marquis of Lorne), that His Excellency hopes you will allow yourself to be named by him as one of the twenty original members of the Mathematical, Physical, and Chemical Section of the New Literary and Scientific Society of Canada, the first meeting of which will be held at Ottawa on the 25th of May. Should you accept be good enough to state what work you wish associated with your name. I have the honour to be, sir, your most obedient, T. STERRY HUNT, President of the Mathematical, Physical, and Chemical Section. C. Baillairgé, Esq. In July, 1882, Mr. Baillairgé was unanimously elected president of the newly incorporated body of Land Surveyors and Engineers of the province of Quebec, which position he continued to fill till 1885. GOVERNMENT HOUSE, Quebec, 18th June, 1877. SIR,—As President of the Canadian Commission at Philadelphia, I have had occasion to show your “Tableau Stéréométrique” to the representatives of Great Britain, France, Germany, Russia, Spain, and Portugal, and, with a single exception, it was known and highly appreciated by all of them. Monsieur Lavoine, engineer of roads and bridges, with whom I became acquainted in Philadelphia, where he was in charge of the exposition of models of the Public Works of France, spoke to me about it then, and also during a visit he paid me in Ottawa last fall, in the most flattering manner for you and for Canadians generally. I am happy, sir, to hear of such a testimony which does you credit, and also to know that your works, which have been crowned so often, both in your own and foreign countries, have just been duly appreciated at the Universal Exposition of 1876 at Philadelphia. I remain, sir, your obedient servant, L. Letellier, Lieut.-Governor of the Province of Quebec M. C. Baillairgé, C.E., Quebec. * * * * * GOVERNMENT HOUSE, Quebec, June 18th, 1887. MY DEAR SIR,—If you could possibly call at my office, I would have the pleasure to know if you would consent to join the Society of Canadian Authors, whom I should be pleased to see now and then at Spencer Wood. Yours truly, L. LETELLIER. M. C. Baillairgé, Quebec. * * * * *