Decomposition in sensitized goods is often attributed to insufficient washing, while as a matter of fact the real cause is more often due to insufficient fixing. As a proof of this statement we give the result of a recent experiment in our laboratory on the elimination of hypo from the film of negatives.

(1) The elimination of hypo from a negative depends very largely upon the agitation given to the water, very rapid and complete agitation causing twice as much elimination as is secured when the material is merely left in the water to soak.

(2) The rate of washing out the hypo is practically independent of the temperature of the water, measurements made at 65, 70 and 80° F. all showing the same rate of loss of hypo. This result, though it appears strange and is contrary to usual belief, confirms our experiments made many years ago.

(3) The elimination of hypo is very rapid under all circumstances, the amount of hypo in the film being reduced one-half every two minutes if plates are left stationary and every one minute if agitation is ensured. Consequently, with complete agitation the film may be considered to be free of hypo in ten minutes, while if the agitation is less complete, twenty minutes is still sufficient.

It will be seen by this that there is no necessity for washing plates more than twenty minutes, especially in warm weather when longer washing may have a tendency to soften the emulsion.

A reputation for promptness is a good business asset. A Majestic Print Dryer will help you to gain such a reputation. Advertised on page 24.

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EASTMAN PORTRAIT FILM NEGATIVE, ARTURA PRINT

From Eastman Professional School Demonstration

Our Illustrations

The road to success is open to all, but lots of people want to get there without the trouble of going."

Many photographers reach success regardless of all obstacles, but there are short cuts, and one of these is the Eastman School of Professional Photography.

The Fall school is on its way, after a month's vacation, and will visit a dozen towns before the holiday season. Any man who has the opportunity to get the three solid days of instruction offered by this school, and who does not take advantage of it, is trying to reach success in a roundabout way.

The most proficient photographers in the country recognize the advantages offered by this school. It is worth going a long way to see and hear the good things offered, but the school is brought almost to your door.

Still, the fact that it is a traveling institution does not lessen the efficiency of its work. If you could have an idea of the mass of detail connected with the packing, shipping and setting up of the thousands of pounds of apparatus - we might say the installing of a complete studio, one department at a time, on a small stage, and the work of tearing down one setting to make room for another, you would not doubt that the school demonstrations are practical.

This is the one point worked for - results must be shown, theory cast aside. The school is a success because its work and its teachings are practical.

Our illustrations this month are examples of the work in negative making. Some of these pictures may have their little faults, but that is true of most all pictures. A variety of work is shown as proof of the fact that the methods used are not stereotyped. A similarity cannot be avoided in the results of the home portraiture demonstrations as the setting cannot be changed each week. However, a great variety of posing and lighting is shown, and while enough suggestions are offered for dozens of pictures the time devoted to the demonstrations only permits the actual making of sufficient negatives to show that the suggestions are all practical.

Those who attend the school each year are fully aware of its worth to them. Those who have attended once may imagine they have secured all the school has to offer. But if such were the case the school could not continue to draw an increasing attendance each year.The instructors are continually adding to their fund of experience.

Our Illustrations StudioLightMagazine1915 190

EASTMAN PORTRAIT FILM NEGATIVE, ARTURA PRINT

From Eastman Professional School Demonstration

They cover the United States from coast to coast, including a number of Canadian cities, each year, and the information they absorb is embodied in their work. The old things are dropped for the new, and in this way the school is continually being made over. You are getting the experience of these men who are encountering new conditions every day.

Not only in negative making but in every branch of studio work is this true. There are new ideas in advertising, display, buying and selling, bookkeeping, commercial work, printing, retouching, dark room work, studio building and all the hundred and one things that go to make up the work of the professional photographer.

The Eastman School is a part of the Eastman plan of service to the profession and its benefits are yours, irrespective of the goods you are using or from whom you may be buying. There is absolutely no obligation to buy Eastman goods and you will hear no selling arguments. Just come and drink in the practical suggestions that are offered and you will go home praising the thoroughness of the three days work - appreciating the value of brushing up on new ideas that will make you a better photographer.