The recent war-time convention of the Photographers' Association of the Middle Atlantic States, held in Baltimore, was a great success. Our illustrations show the results of several of the demonstrations which were of unusual interest.

The first demonstration was one of pictorial photography, made by Mr. Eugene Hutchinson of Chicago, three of the results being shown in our illustrations. Following Mr. Hutchinson, Mr. W. O. Breckon of Pittsburg gave an interesting talk and demonstration of home portraiture. While Mr. Breckon uses film in his home portrait work, he was furnished with plates for this demonstration, and we regret very much that the negatives sent us were broken in transportation and we are therefore unable to show the results of his work.

Miss Emma Gerhard of St. Louis gave an interesting demonstration, the results being shown in two of our illustrations. Her method of posing the subject and handling the draperies, to give an indication of life and action, is of genuine interest. With a needle and thread it took but an instant to catch the hem of the skirt at one or two points, and with a second person to hold the thread, the effect of movement is made most realistic.

Mr. T. L. Halldorson of Chicago made an interesting flashlight demonstration on Portrait Film, the quality of this material being especially suited to such work. The harshness or contrast given by glass plates in flash-light work is entirely overcome by the use of film, the drapery and flesh tones being soft but brilliant, as shown in the results of Mr. Hal-dorson's demonstration.

For Your Own Good

No one, in any line of business, needs to be told, in these days, that competent help is hard to get and equally hard to retain, for his personal experience must have borne the facts in on him. This difficulty causes especial embarrassment in the matter of hurry-up orders which throw the regular routine out of order by reason of the pressure that has to be applied to secure the dispatch of the rush item.

Very few rush orders are genuine : most of them are marked rush because some one has overlooked making provision to meet a need that was known of several days or even several weeks before. Our customers have been served consistently and efficiently both in quality of goods and in promptness of supply, but it is to be remembered that the help situation is not getting any easier. May we ask that every means be used towards the elimination of rush orders or rather towards the reduction of their number. The stock houses will appreciate your consideration in this regard and so shall we.

In Great Britain

The following is taken from the April number of The Photographic Dealer, of London, and gives an interesting sidelight on matters photographic in the British Isles:

Present minimum prices for Bulk Postcards are as follows:

Best quality Bromide, Gaslight, or P. O. P., 57s. net per 1,000, or 55s. net per 1,000 in lots of 5,000 and upwards of one variety.

Commercial quality Bromide, or Gaslight Postcards, 53s. and 51s. net per 1,000 respectively.

Self-Toning Gelatine Postcards, 63s. 6d. net per 1,000.

Self-Toning Collodion Postcards, 70s. net per 1,000.

Sodium Bisulphite

Until shortly after the beginning of the war Potassium Metabisulphite was the only preservative recommended for the Pyro Developer. It was perfectly satisfactory and, until that time, plentiful and reasonably cheap.

Soon afterwards it not only became scarce but expensive as well because of its scarcity. A substitute had to be found and this was Sodium Bisulphite. The forms of Sodium Bisulphite regularly supplied for other purposes, however, had certain objectionable features that it was necessary to overcome, one of these being a considerable content of iron.

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By Eugene Hutchinson

Middle Atlantic States Convention

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Student Soldiers of the U. S. A. School of Aerial Photography in battalion formation on the Kodak Park Athletic Field, which is also their drill ground.Their work is most important, they

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have made good in their training and these and many more like them will make good over there. The photographic profession may well be proud of their representatives in this branch of the service.

While not objectionable in many of its uses this, however, made it out of the question as a preservative for photographic solutions. It is also necessary that it be free from bisulphate which is the oxidation product of bisulphite.

As a consequence we made special arrangements to manufacture our own Sodium Bisulphite and, in our process of manufacture, to entirely eliminate the iron, making our production in every way suitable for photographic purposes and, as a preservative, fully as suitable as Potassium Metabisulphite.

This additional operation in manufacture may in some instances cause our price to be two or three cents a pound above the average price, but the chemical is that much better. The soda containing iron is positively detrimental to the keeping quality of photographic solutions, as is deteriorated bisulphite containing sulphate. And as this chemical is soon to have still further use as an important ingredient of fixing baths, we suggest that you make sure of results by specifying C. K. Co. Tested Sodium Bisulphite when you order.

Nothing interests a soldier more than news from home. Read the copy on page 7 and advertise to get the business of those who should be sending pictures to their soldiers.