In this issue will be found a design and description of a 150 watt dynamo, the first of a series of articles by Mr. Ira M. Cushing, E. E. Other sizes of the same design to be described are: 75, 300 and 550 watt; the latter size being especially adapted to a small, isolated house-lighting outfit. In connection with the description of this size will be given full directions for installing and operating the auxilliary instruments necessary to such a plant. Mr. Cushing is also preparing a series of articles on " Elements of Dynamo Design, " which will be very complete, and yet without the abundance of mathematical formula generally found in text-books. For that reason they will be of special interest and value to electrical students who have not the advantage of a technical college training. We are confident these articles will interest a large number of our readers.
With either the January or February issue the size and scope of the magazine will be increased by several pages. In this connection we would call attention to the fact that, owing to the size of pages and the type used, the volume of reading matter that is at present being given is fully equal to that of a number of the popular magazines sold at the same price, but which, using larger type and for that reason having more pages of a smaller size, seem to give more matter, while not actually doing so. It is also a fact that technical writers receive a much higher rate of payment than is given for general literary matter, a matter of decided importance to the publisher, although often overlooked by the reader. We feel, therefore, that the magazine, even at present, and especially when increased in size, gives an ample return for the moderate subscription charged. That this is also the view of many of our readers is evidenced by the many complimentary expressions found in our correspondence.
We are constantly learning of some excellent devices or constructive work made by readers, but are not always able to induce the makers to prepare descriptions for publication as quickly as desired. To secure a quick and large response from those who can supply interesting articles, we offer the following liberal prizes for the best descriptions suitable for publication In the magazine: First prize, $25.00; second prize, $15.00, and third prize, $10.00. Other prize offers for special subjects will be offered later, but this one will be open to all classes of workers. For acceptable articles received, but which are not awarded a prize, regular space rates will be paid. All articles intended for this competition must be received not later than Dec. 20, 1906. The right is reserved to withhold any or all of the prizes should the articles offered not be deemed of sufficient merit to entitle them to prizes, calculated on the basis of double regular space rates. Articles, to be acceptable, must describe how to make something which would be of interest to a reasonable number of readers. All accepted articles to be the sole property of the magazine. Here is a chance to secure your Christmas presents if you set about it promptly.