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We recently (on page 213) expressed opinions relative to the best mode of heating buildings, and good hot water furnaces were favorably noticed This subject is justly exciting considerable attention at present, and we have received several letters referring to it One from Thomas T Tasker, Sr, states that his hot water apparatus, described on page 148, Vol X, SCIENTIFIC AMERICAN; has been successfully and extensively introduced into Philadelphia, and will soon be in use in this city Another from a correspondent in Lockport, N Y, advocates hot air furnaces, and instances the benefits which its author and several others have derived from their use At some future period we may present extracts from it, as it endorses very fully our views regarding ventilation We have also examined "Brown's Hot Water Heater," at No 22 Spruce street, this city, since the arti cle referred to was published, and will probably soon be able to illustrate it in our columns On page 213 reference is made to the illustrated furnace on page 51, Vol XI, SCIENTIFIC AMERICAN ; it should have been page 401, No 51 Literary Notices THE APPLICATION OF ABT TO MANCFAonntES, WITH 180 ILLUSTRATIONS By George C Mason New York: G P Putnam amp; Co 12mo, SI 60 The object of this work has baen to collect the historical facts relative to metal working and the manufacture of textile products, together witb auch particulars of the various processes of converting the raw material into finished goods, as are most likely to prove interesting and attract attention to the importance of a higherdevelopment of art in our manufactures The author has performed his work well, and his book ia replete with suggestions and illustrations which will prove of infinite service to those engaged in the branches of manufacturing treated of The tendency of American ineenuiy and skill is toward utilitarianism almost exclusively, leaving art to take care ot itself; but, in nine cases out of ten, a product may be rendered pleasing and attractive to the eye and the mind, at the same time it is rendered useiul, without additional cost, by simply observing the acknowledged rules of art, therefore we welcome this volume to our lit of practical mechanical works, and cordially recommend it to our readers SOEOHO AND IMPEE—A O Moore No 140 Fulton st, this city, has just published Henry S Olcott'a excellent little work, with supplement, on the above plants, embracing a full account of the successful experiments of Mr Lovering, of Philadelphia, in making Sorgho sugar, which have been alluded to by us in a previous number Very extensive experiment will undoubtedly be made this year in the cultivationiof the above planta to test their capacity and economy as sugar producers IMPEBIAL CYCLOPAEDIA OF MACHINEBY—Parte 13,14, 15, and I of the above wellnamed work have just been issued by Messrs C B Russell amp; Bros, Tremont street, Boston It is edited by Wm Johnson, of Glasgow No 13contains large working drawings of direct acting engines, by Jas Watt amp; Co, of Soho, London, fitted in thelargesnipof war, James VFati No 14 contains an engraving of an improved throstle spinning frame, by Messrs Sharp amp; Roberts, the renowned manufacturers of cotton machinery in Manchester, England No 15 contains engravings of the engines of the La Plata, the West India mail steamer, by Robert Napier No 18 contains engravings of an expansion double cylinder engine ; also, a huge cotton warp sizing machine THE ATLANTIC MONTHLY—This vigorous young magazine for April contains fourteen able articles The leader is on "The Hundred Days," by an eye witness, from the time Napoleon arrived in Paris, from Elba, until his sun went down on the Field of Waterloo It is full of thrilling incident Published by Phillips, Sampson amp; Co, Boston BLACKWOOD'S MAOZlNE The number of thia old and favorite magazine for March has been promptly republished by Messrs L Scott amp; Co, No 54 Gold st, this city " What will he do with it ?" by Bulwer, ia continued, and so is Capt Burton's journal of his interesting travels in Zanzibar The other articles are all good, and worthy of Blackwood in its palmiest days
