Scientific American Volume 78 Number 03 (January 1898) . N. J. U. S. Metal Polish. Indianapolis. Samples free. Gasoline Brazing Forge, Turner Brass Works, Chicago Yankee Notions. Waterbury Button Co., Waterby, Ct. Want articles made of brass. V. Stey, Youngstown, O. Improved Bicycle Machinery of every Garvin Machine Co., Spring and Varick Sts., N. Y. Concrete Houses -stone. Ransome, -cheaper than brick, superior to757 Monadnock Block, Chicago. Machinery manufacturers, attention! Concrete andmortar mixing mills. Exclusive rights for sale. Ran-some, 757 Monadnock Block. Chicago.


Scientific American Volume 78 Number 03 (January 1898) . N. J. U. S. Metal Polish. Indianapolis. Samples free. Gasoline Brazing Forge, Turner Brass Works, Chicago Yankee Notions. Waterbury Button Co., Waterby, Ct. Want articles made of brass. V. Stey, Youngstown, O. Improved Bicycle Machinery of every Garvin Machine Co., Spring and Varick Sts., N. Y. Concrete Houses -stone. Ransome, -cheaper than brick, superior to757 Monadnock Block, Chicago. Machinery manufacturers, attention! Concrete andmortar mixing mills. Exclusive rights for sale. Ran-some, 757 Monadnock Block. Chicago. The celebrated Hornsby-Akroyd Patent Safety OilEngine is built by the De La Vergne Refrigerating Ma-chine Company. Foot of East 138th Street, New York. The best book for electricians and beginners in electricity is Experimental Science, by Geo. M. mail, $4. Munn & Co., publishers, 361 Broadway, N. Y. 9W Send for new and complete catalogue of Scientificand other Books for sale by Munn & Co., 361 Broadway,New York. Free on mm HINTS TO CORRESPONDENTS. Names and Address must accompany all lettersor no attention will be paid thereto. This is for ouiinformation and not for publication. References to former articles or answers shouldgive date of paper and page or number of question. Inquiries not answered in reasonable time shouldbe repeated ; correspondents will bear in mind thatsome answers require not a little research, we endeavor to reply to all either by letteror in this department, each must take his turn flu yers wishing to purchase any article not advertisedin our columns will be furnished with addresses ofhouses manufacturing or carrying the same. Special Written Information on matters ofpersonal rather than general interest cannot beexpected without remuneration. Scientific American Supplements referred to may be had at the office. Price 10 cente each,Books referred to promptly supplied on receipt offace near one end, through which the en


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Keywords: ., bo, bookcentury1800, bookdecade1890, booksubjectwire, bookyear1898