SCIENC 





tEutered at the Pos.-Omce of Kew York, N.V.., as Second-Class Matter.J 



Ninth Year. 

 Vol. XVIII. No. 442. 



NEW YOKK, July 24, 1891. 



Single Copies, - "^-'J- wis. 

 •S3. 50 Per Year, in .flj.,ANCE. 



New Method of Protecting Property 

 from Lightning. 



The Lightning Dispeller. 



The Patent Lightning: Dispeller is a conduc- 

 tor specially designed to dissipate the energy 

 of a lightliing 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 Lightning Protection Company, 



Sioux City, Iowa. 



J. B. CRALLE & CO. 

 D. C. 



ILLCTSTRiTED HAND-BOOK FREE upon applica- 

 tion. Mention this paper. 



ESTERBROOK'S 

 STEEL PENS. 



OF SUPERIOR AND STANDARD QUALITY. 

 Leading Nos.; 048, 14, 130, 135, 239, 333 



For Sale by all Stationers. 



THE ESTERBROOK STEEL PEN CO., 



Works: Oamden, N.J. '26 John St., NetvVork. 



THE 



M Te 



COMPANY. 



95 MILK ST,, BOSTON, MASS, 



Tliis Company owns the Letters 

 Patent granted to Alexander Gra- 

 ham Bell, aiarcli 7tli, 1876, No. 

 174,465, and January 30, 1877, 

 No. 1§6,787. 



The Transmission of Speech by 

 all known forms of ELECTRIC 

 SPEAKING TELEPHONES in- 

 fringes the right secured to this 

 Company by the above iiatents, 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. 



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

 Catalogue, paper bound, 15c ; cloth bound, 2oc. 

 GEO. L. ENGLISH & CO, Jlineraloglsts, 

 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. 



QUERY. 



Can any reader of Science cite 

 a case of lightning stroke in 

 which the dissipation of a small 

 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 Societ)'), 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, 

 ]SrE;\V YORK. 



On Jan. 1st, and at intervals of two months 

 since, has been published the New Zealand 

 Journal of Science, dealing with all branches 

 of natural science, especially in relation to 

 the colony. Subscription (including postage 

 to America), 12s. 6cZ. per annum, payable to 

 the Editor, care Matthews, Baxter & Co., 

 Bowling St., Dunedin, N. Z. 



