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You who may die any instant, you sign sentences of death, you declare war, you take part in it, you judge, you punish, you plunder the working people, you live luxuriously in the midst of the poor, and teach weak men who have confidence in you that this must be so, that the duty of men is to do this, and yet it may happen at the moment when you are acting thus that a bacterium or a bull may attack you and you will fall and die, losing forever the chance of repairing the harm you have done to others, and above all to yourself, in uselessly wasting a life which has been given you only once in eternity, without having accomplished the only thing you ought to have done.
Then the bacterium was apt to disregard class distinctions, and they were never really happy in their servants. Read their surviving books. Each generation bewails the decay of that "fidelity" of servants, no generation ever saw. A world that is squalid in one corner is squalid altogether, but that they never understood.
He exposed himself to the contagion of cholera, but his science and fine constitution stood him well in hand, and he returned unharmed. It was in May of 1884 that he was able to announce the discovery of the coma bacillus, that is, the bacterium of cholera. Here, again he had the enemy at bay.
The method of spore formation is always uniform for any single species. Whatever be the method of the formation of the spore, its purpose in the life of the bacterium is always the same. It serves as a means of keeping the species alive under conditions of adversity. Its power of resisting heat or drying enables it to live where the ordinary active forms would be speedily killed.
Bacteria are commonly given a generic name based upon their microscopic appearance. There are only a few of these names. Micrococcus, Streptococcus, Staphylococcus, Sarcina, Bacterium, Bacillus, Spirillum, are all the names in common use applying to the ordinary bacteria. There are a few others less commonly used.
A single bacterium in the midst of such a stiffened mass will feed upon it and produce descendants rapidly; but these descendants, not being able to move through the gelatine, will remain clustered together in a mass, which the bacteriologist calls a colony.
And I have not yet been able to meet with any advocate of Abiogenesis who seriously maintains that the atoms of sugar, tartrate of ammonia, yeast-ash, and water, under no influence but that of free access of air and the ordinary temperature, re-arrange themselves and give rise to the protoplasm of Bacterium.
When the subject of germ disease was first studied and the connection between bacteria and disease was first demonstrated, it was thought that each particular species of pathogenic bacteria produced a single definite disease; and conversely, each germ disease was supposed to have its own definite species of bacterium as its cause. Recent study has shown, however, that this is not wholly true.
The wind is dropping this evening, and I have been up to Wind Vane Hill. I now think the ice has remained fast. There has been astonishingly little drift with the wind, probably due to the fact that there has been so very little snowfall of late. Atkinson is pretty certain that he has isolated a very motile bacterium in the snow.
At one time it was thought to be the result of the growth of a bacterium, and a distinct bacillus was described as producing it. It has finally been shown, however, to be caused by a microscopic organism belonging to the group of unicellular animals, and somewhat closely related to the well-known amoeba. The whole history of the malarial organism is not yet known.
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