The article on the "Hot Air Engine " in this issue is to be followed by one on a "Dynamo " and one on a "Storage Battery;" all of about the same capacity, making together a nicely designed combination which should be of much interest to our readers.

Our premium offer of turning lathes is meeting with the success which we felt certain it would when making the same. Two letters received from fortunate winners, and given in this issue, are the best testimony we can offer as to the value of these premiums. As a lathe is such a necessary tool to the amateur, and as our offer places a good lathe within the reach of nearly every reader of the magazine, we feel confident that many others will be equally successful in securing lathes at an early date. As we have a large stock on hand, and in process of manufacture, premiums will be sent promptly on receipt of the necessary subscriptions. We also announce that the following accessories are being designed and made, which will add materially to the usefulness of the lathe ; - Saw table for circular saw, 3 inch for metal and 5 inch for wood ; saw arbor for same and for 5 inch emery wheel; drill chuck for holding drills, and fret saw attachment. We shall probably be able to announce terms for securing these attachments in the next issue.

The financial demands of model making and experimental work are frequently greater than some of our younger readers find it convenient to meet with their ordinary income. If they could carry on a little business, which would be dignified and agreeable, and yet not interfere with school or home duties, their income could be considerably increased. To assist such of our readers as will be interested in a business of this kind we make the following offers ; - The premiums given for three subscribers will be given ;

1. For the best article telling how boys can make money, without capital, in a place over 10,000 inhabitants.

2. For the same, without capital, in place under 10,000 inhabitants.

3. For the same with a capital not exceeding $5.00 in a place over 10,000 inhabitants.

4. For the same in a place under 10,000 inhabitants.

All articles must be received not later than April, 10, 1904. Articles not awarded a prize, but which are of sufficient interest to publish will be awarded a premium given for one subscriber. Articles should contain not over 300 words, be written on one side of the paper with one inch margins on all sides.

West Lynn, March, 3, 1904. DRAPER PUB. Co., Boston, Mass, Gentlemen: - The lathe was received in O. K. condition, and I want to state that it is a little beauty; more so than I expected. I set it up the same afternoon received, and had it running. It is a very smooth running machine, and will make a very handy tool. I would like to recommend it for both amateurs and professionals; especially the easy way of getting it. I shall be pleased to show it to anyone interested, living in my locality. It is worth trying for twice over.

C. A Carlsson.

allston, Mass, March, 2, '04. DRAPER PUB. CO., Boston, Mass, Gentlemen:- The lathe received and in first class condition. The scraped bed was an additional surprise' to me. The alignment was correct and the bearings stood four hours continuous running without heating. I am much pleased with the lathe, and earnestly recommend it to all readers of Amateur Work.

A. Gordon Hentz.