RECENTLY PATENTED IMPROVEMENTS. 281 



Justice and their rights of Perpetual Property in their Discoveries and Inventions, 

 by Lysander Spooner, published by Cupples, Upham & Co., Boston, Mass. An 

 Appeal to the People of the United States in behalf of the Great Statue, Liberty 

 Enlightening the World, Wm. Evarts, President of Executive Committee, New- 

 York. The American, a magazine of Literature, Education and Science. W. J. 

 Bell and W. C. Ransburg, Editors, Valparaiso, Illinois. The Transactions of 

 the Academy of Science of St. Louis, Vol. 4, No. 3, price $2.00. Professional 

 Papers of Signal Service, No. 13, Temperature of the Atmosphere and Earth's 

 Surface, by Wm. Ferrel, Government Printing Office, Washington, D. C, 1884. 

 The Young Mineralogist and Antiquarian, published monthly by G. H. Wise, 

 Wheaton, Illinois, 75 cents per year, Vol. i, No. i. Johns Hopkins University 

 Studies, Herbert B. Adams, Editor, Second Series VH. Institutional Begin- 

 nings in a Western State, by Jesse Macy, A. B., Baltimore, Md. , July, 1884. 

 Ayer & Sons' Manual, 24th Edition, October, 1883, Ayer's Standard Lists of 

 Publications, Philadelphia, Penn. 



SCIENTIFIC MISCELLANY. 



RECENTLY PATENTED IMPROVEMENTS. 



J. C. HIGDON, M. E., KANSAS CITY, MO. 



Tornado-Proof Roofing. — The object of this invention is to provide a 

 secure and safe fastening tin and sheet-iron roofing. 



To be used especially in sections of country that are subject to the ravages 

 of high winds and tornadoes, and it consists in providing extra fastenings in the 

 form of staples or hooks that are driven through the roofing at the joints thereof 

 into the wood-sheeting and cUnched or otherwise fastened upon the under side ; 

 this in addition to the usual fastening-anchoro and nails. 



Any desired number of the fastenings may be applied to a roof according to 

 the nature of the surroundings, and the violence of the prevailing winds. 



After the fastenings are attached, the openings through the sheets are securely 

 closed with solder thereby keeping the roof perfectly water-tight. Messrs. Chas. 

 E. Wagner and Henry Flynt, of Kansas City, are the inventors. 



Hanging Sliding-Doors. — This invention relates to improvements in the 

 manner of hanging and operating inside sliding-doors, and its objects are to dis- 

 pense with the usual double tracks and lateral guiding-rollers for the top of the 

 doors, and to provide improred means for keeping the door in a vertical line 

 while in operation. 



It consists in using two independent single piece hangers, having journaled 



