I04 



SCIENCE. 



[Vol. XIV. No. 340 



INDUSTRIAL NOTES. 

 Standard Resistance Box and Bridge. 



Messrs. James W. Queen & Co. call the attention of electri- 

 cians to the following indorsement of their No. I Standard labora- 

 tory resistance box and bridge. The set referred to in a letter from 

 Professor B. F. Thomas, an e.xtract from which we give below, was 

 designed by Professor William A. Anthony, and was constructed 

 under his personal supervision by the Mather Electric Company. 

 By a special arrangement, all these sets are now made by Messrs. 

 Queen & Co. Professor Anthony adjusts all of the coils, and 

 furnishes a certificate with each set. 



Professor Benjamin F. Thomas of the Ohio State University 

 writes from Columbus, O., Miy i8, 1S89, concerning this new re- 

 sistance set, " The mechanical work on it is, if any thing, superior 

 to that of Elliott Brothers. The metal segments are uniform in 

 size and shape, and well finished, while the fit of the plugs is the 



most perfect I have seen. The coils are of one lot of wire through- 

 out, and have therefore a uniform temperature co-efficient, whose 

 low value, .00024, allows one to neglect it in all ordinary work. 

 The. box is adjusted to legal ohms at 19'' C, and is accompanied by 

 Professor Anthony's statement that they are accurate to -^ of 

 I per cent. . . . You will remember that you procured for ms 

 while at the University of Missouri a large five-dial bridge from 

 Elliott Brothers. That was a fine piece of apparatus, but I regard 

 this as far superior. It has all the advantages of the dial arrange- 

 ments, and has in addition the advantage of the possible connec- 

 tion of any single coil, or of almost any desired combination of 

 single coils, and also of any desired combination in parallel. One 

 can therefore check the adjustments of the several coils against 

 one another, the box thus containing means for its own verification. 

 The box answers also the purpose of a set of comparison coils, and 

 enables one to do a number of things which cannot be done with 

 the usual ^orms." 



DAFT ELECTRIC LIGHT COMPANY. 



Power Stations, 



Electric Railways. 



Stationary Motors 



m 



% to 100 H.P. 



Car Motors 15 to 

 250 H.P. 



Executive Office, 1 15 Broadway, N.Y. 



FACTORY, JERSEY CITY, N. J. piease Mention "Science.'^ 



GUARANTY INVESTMENT COMPANY 



0,000. 



CAPITAL 



Hon. ALBERT H. HORTON (Chief Justice, Kansas Supreme Court), Topeka, Kan., Pres't. 



701 

 b 



Farm Mortgages 7^ 







The Company calls the special attention of Investors to the following points : 



I. All loans guaranteed and interest payable semi-annually at the Importers' & Traders' National Bank, New 

 York. 



II. Unusual fulness of information, not only about the security itself, but about the general development of the 

 section where the farm is located. 



III. An examination each year of the general business of the Company and the Mortgages themselves by a COM- 

 MITTEE OF INVESTORS sent for the purpose. 



IV. Many hundred Mortgages taken and NOT A SINGLE FORECLOSURE. 



V. Exhibitions in New York at frequent intervals, of Kansas and Nebraska Farm Products. The Exhibition at 

 he American Institute in the fall of 1888, received the HIGHEST A WARD of superiority. 



VI. Monthly Bulletins giving full information about all Mortgages offered for sale. 



Address for Monthly Bulletin and Investors' Committee Meport for 18H8, 



HENRY A. RILEY, General Eastern Manager, 191 Broadway, N.Y. 



