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MISCELLANEOUS INTELLIGENCE. 



Art. I. General Notices,' 



Emigration. — As we havelatelybeen strongly recommending gardeners 

 to emigrate to the United States, several persons have since sent us 

 publications, with a view to show that the Canadas offer still greater 

 advantages. We have looked over three of these works. The first is entitled 

 The Canadas, as they at j)resent commend themselves to the Enterprise of 

 Emigrants, Sfc, compiled from documents furnished by John Gait; by 

 Andrew Picken. This work abounds with practical details, topographical, 

 agricultural, and commercial, and must therefore be of very great value 

 to those who are in doubt in what part of the country to settle. The next 

 book is Pickering's Emigrant 1 's Guide, 4th edition. In this work the 

 author has given a comparative statement of the prospects held out by 

 the United States and Upper Canada, as the best for British emigrants ; 

 and he endeavours to show the superior advantages of the latter country 

 to farmers, farm-labourers, and the most useful description of tradesmen. 

 We have little doubt he is correct ; but, for gardeners, we should prefer 

 the United States ; because, there they have at least a chance of getting 

 professional employment, in addition to the certainty of getting employ- 

 ment as common labourers. A third work is, Statistical Sketches of Upper 

 Canada, for the Use of Emigrants ; by a Back-Woodsman. This has the 

 merit of being a concise and cheap work. The author prefers Canada to 

 the United States, and principally because Canadian corn is admitted 

 into both British and West Indian ports on more advantageous terms 

 than that of America; and that the articles required for the consumption 

 of the inhabitants, and British goods generally, pay one twelfth only of 

 what they do in the ports of the United States. We admit the full weight 

 of all these reasons; and, having recommended emigration to gardeners, 

 have thought it our duty to state them. 



Preserving the Purity of the Thames Water. — In our Fifth Volume, 

 p. 690., we mentioned several plans for saving the manure at present 

 carried into the Thames by the London sewers, and at the same time 

 maintaining the purity of the water of the river. We have since seen a 

 4to pamphlet, entitled, Outlines of several new Inventions for Maritime and 

 Inland Purposes, by John Martin, Esq., the celebrated artist, 4to, 1829, 

 not published, containing a second plan for supplying London with pure 

 water ; and Ainger's plan for preserving the purity of the Thames, 

 noticed in the Mech, Mag., vol. xiv. p. 82. Mr. Martin had before pro- 

 posed a plan, in a work not published, and of which we have never been 

 able to see a copy, for supplying London with water from the river Colne, 

 and this he considers the best ; but, lest it should be found insuperably 

 objectionable, he submits this second plan, which is that of " preventing 

 the discharge of any sewer into the Thames above Millbank, or, perhaps, 

 Neat House Gardens, and by keeping back the ascending tide at the same 

 spot. The water above will then be the pure river water; and from this the 

 metropolis may be supplied by engines in the usual way." The ascending tide 

 he proposes to keep back by a strong dam or weir, which might be built 

 of cast iron, in Deeble's manner, across the river, and have, at each end 

 of it, two locks for the passage of vessels. To prevent the foul tide water 



