The original intention was to hold a two day meeting but the members of the Council feel that the extreme activity of pulp and paper mills at the present time precludes the absence of technical men from the mills for longer than one day.
With the papers forthcoming it is expected that this will be one of the very best of the Section meetings. Technical men are strongly urged to make preparations now to be in Montreal for the occasion.
That the Third National Exposition of Chemical Industries will be a great success is already assured. An additional third floor has already been engaged, and plans are being made to use the fourth floor. In addition it is hoped to have large sections showing the resources of the country awaiting development.
Two prizes have been offered to the students of Cooper Union Art Schools to draw up a poster seal for the next exposition. The designs for this purpose will be finished January 1st next year, and prizes awarded February 1st. All designs submitted and which the Jury consider fit, will be exhibited during the next exposition.
Among those interested in the pulp and paper lines, who joined the Entente delegation from Ontario in visiting Montreal, Three Rivers and Quebec were W. P. Gundy, managing director of W. J. Gage and Co., and S. J. Moore, President of the F. N. Burt Co., Toronto.
SOME CHEMICAL AND PHYSICAL REACTIONS OF ROSIN SIZE SOLUTIONS
Paper read by J. A. DeCEW at the meeting of the American Chemical Society.
It is quite to be expected that in any class of chemical reactions which occur under such varying conditions as those existing during the precipitation of rosin size in paper mill practice, there will be among the various investigators a certain amount of disagreement regarding the theoretical explanation of what actually takes place. There is also some confusion resulting from the termology which is commonly used in describing sodium resinate compounds existing in rosin size, as for example, in the use of the phrase “free rosin”. The purpose of the following remarks is not to recapitulate the work of other investigators, nor to criticize their conclusions, but to submit a short discussion of the effect upon the chemical reactions involved, of the various physical conditions in which the material may be used.