Ninth Year. 

 Vol. XVIII. No. 444. 



NEW YORK, AuCxUST 7, 1891. 



Single Copies, Ten Cents. 

 3.50 Per Year, in Advance. 



New Method of Protecting Property 

 from Lightning. 



The Lightning Dispeller. 



Price, $20 to $30,— According to size. 



The Patent Lightning Dispeller is a conduc- 

 tor specially designed to dissipate the energy 

 of a lightning discharge, — to prevent its 

 doing harm, — placing something in its path 

 upon which its capacity for causing damage 

 may be expended. 



No recorded case of lightning stroke has 

 yet been cited against the principle of the 

 Dispeller. So far as known, the dissipation 

 of a conductor has invariably protected under 

 the conditions employed. 



Correspondence solicited. 



AGENTS WANTED. 



The American Ligbtning Protection Company, 



United Bank Building, Sioux City, Iowa. 



JOHNS HOPKINS UNIVERSITY, 



BALTIMORE. 



Announcements for the next academic 

 year are now ready and will be sent on ap- 

 plication. 



THE 



Bell 



COMPANY. 



95 IILK ST„ BOSTON. MASS, 



This Company owns the Letters 

 Patent granted to Alexander Gra- 

 ham Bell, March 7th, 1876, No. 

 174,465, and January 30, 1877, 

 No. 186,787. 



The Transmission of Speech hy 

 all known forms of ELECTKIC 

 SPEAKING TELEPHONES in- 

 fringes the right secured to this 

 Company hy the above patents, and 

 renders each individual user of tel- 

 ephones, not furnished by it or its 

 licensees, responsible for such un- 

 lawful use, and all the conse- 

 quences thereof and liable to suit 

 therefor. 



MIMrnil P Cabinet Specimens. Collections. 

 rvllMkllnLui For Blowpipe Analysis. 



Largest and finest stock in U. S. 100pp. Illustrated 

 Catalogue, paper bound, 15c.; cloth bound, 25c. 

 GEO. L. ENGLISH & CO, Mineralogists, 

 Removed to 733 & 735 Broadway, New York. 



PROTECTION FROM LIGHTNING. 



All the capital desired for the parent company 

 to handle my patents on a new method of protect- 

 ing buildings from lightning has been subscribed. 

 Sub-companies and agencies to introduce the 

 invention are forming, and any desirous of tak- 

 ing State-rights should address The American 

 Lightning Protection Co., Sioux City, Iowa. 



The English patent is for sale, and offers 

 an excellent opportunity for the formation of a 

 company now that the American company is so 

 favorably started. 



N. D. C. HODGES, 47 Lafayette Place, New York. 



The 



Remington 



has set the copy for writing 

 machines for 15 years. 

 It is to-day the 



Standard 



and expects in the future, 

 as it has in the past, 

 to lead all others 

 in adding improvements 

 to what will always be 

 the true model of a 



Typewriter. 



Wyckoff, Seamans &-= Benedict, 

 327 Broadway, New York. 



QUERY. 



Can any reader of Science cite 

 a case of lightning stroke in 

 which the dissipation of a smaU 

 conductor (one-sixteenth of an 

 inch in diameter, say,) has failed 

 to protect between two horizon- 

 tal planes passing through its 

 upper and lower ends respective- 

 ly? Plenty of cases have been 

 found which show that when the 

 conductor is dissipated the build- 

 ing is not injured to the extent 

 explained (for many of these see 

 volumes of Philosophical Trans- 

 actions at the time when light- 

 ning was attracting the attention 

 of the Royal Society), but not 

 an exception is yet known, al- 

 though this query has been pub- 

 lished far and wide among elec- 

 tricians. 



First inserted June 19. No response 

 to date. 



N. D. C. HODGES, 



47 LAFAYETTE PLACE, NEW YORK. 



