SCIENCE 



[Entered at the Post-OfBoe of New Yort, N.Y., as Second-Class Matter.] 



A WEEKLY NEWSPAPER OF ALL THE ARTS AND SCIENCES. 



Sevknth Year. 

 Vol. XIV. No. 338. 



NEW YORK, July 26, i{ 



Single Copies, Ten Cents. 

 53.50 Per Year, in Advance 



THE BRUSH ELECTRIC COMPANY'S NEW ALTER- A glance at the dynamo (Fig. i) shows that it is compact, sim- 



NATING-CURRENT SYSTEM. pie, and symmetrical. An examination shows that it is of the 



The end attained in the system of long-distance transmission of alternating type ; that its field-magnets are many, and carried by 



electrical energy illustrated herewith has been reached by an aban- the shaft ; that the armature is fixed, and absolutely free from any 



donment of the long- traversed routes already familiar to the public. magnetic material ; that its parts are easily accessible; and that 



FIG. I. — NEW BRUSH ALTERNATING-CURRENT DYNAMO 



The underlying principle of the "coreless" dynamo here illus- an armature-coil may be cut out, removed, or replaced without 



Irated was discovered and applied by Mr. Brush more than ten stopping the machine. The machine illustrated has an output of 



years ago, and new demands have now called for its extended ap- 60,000 watts, and supplies current for a thousand !6-candle-power 



plication on a regular scale. lamps. 



