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Updated: May 17, 2025
Moreover, Bail has observed the development of a Torula larger than T. cerevisioe, from a Mucor, a mould allied to Penicillium. It follows, therefore, that the Toruloe, or organisms of yeast, are veritable plants; and conclusive experiments have proved that the power which causes the rearrangement of the molecules of the sugar is intimately connected with the life and growth of the plant.
In his famous "Mikroskopische Untersuchungen," Schwann speaks of Torula as a "cell;" and, in a remarkable note to the passage in which he refers to the yeast plant, Schwann says:
But if you take that plug out and give the air free access, then, sooner or later fermentation will set up. And there is no doubt whatever that fermentation is excited only by the presence of some torula or other, and that that torula proceeds in our present experience, from pre-existing torulae. These little bodies are excessively light.
All investigation subsequently has confirmed this original idea. It has been shown that if you take any measures by which other plants of like kind to the torula would be killed, and by which the yeast plant is killed, then the yeast loses its efficiency. But a capital experiment upon this subject was made by a very distinguished man, Helmholz, who performed an experiment of this kind.
But when Turpin and Schwann resolved the living body into an aggregation of quasi-independent cells, each, like a Torula, leading its own life and having its own laws of growth and development, the aggregation being dominated and kept working towards a definite end only by a certain harmony among these units, or by the superaddition of a controlling apparatus, such as a nervous system, this conception ceased to be tenable.
In his famous "Mikroskopische Untersuchungen" Schwann speaks of Torula as a "cell"; and, in a remarkable note to the passage in which he refers to the yeast plant, Schwann says:
And from that time forth we have known this substance which forms the scum and the lees as the yeast plant; and it has received a scientific name which I may use without thinking of it, and which I will therefore give you namely, "Torula." Well, this was a capital discovery. The next thing to do was to make out how this torula was related to the other plants.
Of course, it does not follow from this, that all contagious and infectious diseases are caused by organisms of as definite and independent a character as the Torula; but, I think, it does follow that it is prudent and wise to satisfy one's self in each particular case, that the "germ theory" cannot and will not explain the facts, before having recourse to hypotheses which have no equal support from analogy.
By experiments of the most ingenious kind, the solid parts have been separated from the fluid parts, and it has then been discovered that you may vaccinate a child as much as you like with the fluid parts, but no effect takes place, though an excessively small portion of the solid particles, the most minute that can be separated, is amply sufficient to give rise to all the phenomena of the cow pock, by a process which we can compare to nothing but the transmission of fermentation from one vessel into another, by the transport to the one of the torula particles which exist in the other.
Of course the first obvious suggestion is, that the torula has been generated within the fluid. In fact, it seems at first quite absurd to entertain any other conviction; but that belief would most assuredly be an erroneous one.
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