The only sure way to determine the ripeness of a melon is to plug it. Of course, if the melon is not ripe plugging doesn't improve its chances of arriving at a luscious maturity, but it does save disappointment for the guests at the feast.

The surest way to determine the purity of the chemicals you are using is to try them: if they afford perfectly satisfactory results your plugging hasn't harmed anything, but if, on the other hand, your practical test demonstrates their unworthiness, your plugging has been a somewhat expensive operation.

If you are an expert chemist you may plug your chemical melon without doing any damage, but this entails a knowledge and apparatus usually beyond the average professional. Up against it then? Not a bit of it. You may have your chemicals "plugged" for you in the most scientific manner and at a trifling cost. Even if you possessed the requisite technical knowledge and all the apparatus necessary, testing your chemicals scientifically would prove a very expensive proposition owing to the comparatively small quantity you. individually, use. Some philanthropic scheme? No sir, just plain business.

From A Collodio Carbon Print By Kandeler Bros. St. Louis, Mo.

From A Collodio-Carbon Print By Kandeler Bros. St. Louis, Mo.

Supposing you were a lamp manufacturer, and made corking good lamps, and the oil to be used in them wouldn't burn, you would get very busy trying to improve the grade of oil or else go out of the lamp business. That's the answer: The manufacturer of the sensitized products with which the chemicals are to be used must fur his own salvation test your chemicals for you and see that you are provided with only those of tested and known purity and strength.

This device on the package is your guarantee.

Scientific Plugging StudioLightMagazine1909 8

From A Business Standpoint

When Mr. Aristo Demonstrator comes into your studio, he comes on business, and in every instance you can well afford to spend a little time with him; he won't waste your time - hasn't got any of his own to waste, and in many instances is in a position to do you a real service.

You already use Aristo, are perfectly satisfied with it, and are busy and don't want to see him? Now let's think a moment - you would welcome a customer that would bring money into your studio: sure you would. Well, there are other ways of making money besides earning it, ways to save money count just as well. Now. while Mr. Demonstrator won't order a dozen cabinets, he may have some suggestions to offer that will save you the price of several dozen. Hadn't thought of it that way before? Well, that's just it, a busy man hasn't always time to stop and consider all sides of a question, hence this little suggestion.

Mr. Demonstrator is constantly on the move from one end of his territory to the other: he sees new faces, receives new ideas, new problems confront him. Perhaps in just the last town he visited, he learned a new stunt that you could use to excellent advantage; one customer was having difficulty in producing good negatives, that he, from his experience, was able to remove. Will he tell you of these things, and do all he can to solve your problems for you? Just meet him half way and see if he don't. If you are not using Aristo, will he try and induce you to? Certainly, that's what keeps him on the pay roll, you know, and he'll offer some convincing reasons, too. No, he won't go away mad if you turn him down, but he'll be back to see you every time he comes to town, and sooner or later he will land you. for he has good old Aristo to back him.

From A Collodio Carbon Print By Kandeler Bros. St. Louis, Mo.

From A Collodio-Carbon Print By Kandeler Bros. St. Louis, Mo.