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Updated: May 18, 2025
I have a telegram from our good friend Pfeffer up in Wayland, in Alberta, Canada, where he is doing our work, but is presumably a German instructor. Ah, here it is " He drew out the coded wire that Pfeffer had sent.
The slightest hint or suspicion as to the purpose of his trip would frustrate it. Will you, Mr. Smythe, telegraph to Toronto, and tell the chief just what has been done?" Mr. Smythe nodded his head. Ted went out first. As he closed the door, another door far down the hall opened, a head came out, a very German head the head of Mr. Pfeffer, instructor in that language.
At a certain moment the pressure will cease to increase and will remain at a fixed value which now has a given direction. This is the osmotic pressure. Pfeffer demonstrated that, for the same substance, the osmotic pressure is proportional to the concentration, and consequently in inverse ratio to the volume occupied by a similar mass of the solute.
It was announced to those who made inquiries that Ted had been called home. Mr. Pfeffer received the information with private wonder and doubt. He took occasion to stroll down to the telegraph office later that same day. "Hello, Peter," he said to the operator. Peter turned around to see if anyone was about, then brought out a copy of the coded telegram. "Easy code, professor what does it mean?"
But there was none that had been sent that morning to Chicago. A long wire, also in code, went forward from Mr. Pfeffer to Chicago. Then that worthy strolled back to the Academy. In a room in one of the West Side streets of Chicago, in an old-fashioned office building, which also rented rooms to lodges and societies, eight men were engaged in earnest conversation.
It was interesting to try to reproduce artificially semi-permeable walls analogous to those thus met with in nature; and Traube and Pfeffer seem to have succeeded in one particular case.
His copy already had translated the words properly. "It may mean nothing or it may mean everything. The boy is going to Chicago perhaps Chicago is No. 2 perhaps not. Peter, you had better send a telegram. Better be sure, eh?" "Why would they be sending a child and for what?" Peter was incredulous. "Did the boy send a telegram?" Mr. Pfeffer asked. "I had better see them all."
He gave figures from which it was easy, as Professor Van t'Hoff found, to draw the conclusion that, in a constant volume, the osmotic pressure is proportional to the absolute temperature. De Vries, moreover, by his remarks on living cells, extended the results which Pfeffer had applied to one case only that is, to the one that he had been able to examine experimentally.
Just before retiring, Captain Wilson came into Ted's room. "It seems silly to distrust Pfeffer, Lucky, still when you get to a station, say Winnipeg, I would telegraph your mother that you are coming. If any questions should be asked of her, she should say that she knows you are coming. See? It is best to be safe and to guard against everything." Early morn saw Ted on the train.
Our guide, however, took us through this trackless waste of smooth ice, a distance of over twenty-five miles, without deviation from the direct line, with no landmarks or sun to steer by; but on he went with the unerring instinct of a dog, until we struck the land at the western banks of Pfeffer River.
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