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The independent temper which had been stirred by the fight with the Church was illustrated in his Speculum Ecclesiae, a bitter satire on the monks and on the Roman Curia.
The heavens, on the other hand, were formed of air and fire, and the sun was, as it were, a speculum at which the effulgence and the heat of the whole heavens concentrated. But that the aether and the fire had not been fully separated from earth and water he held to be proved by the hot fountains and fiery phenomena which must have been so familiar to a native of Sicily.
The necessity for extreme precaution in the operation of annealing will be manifest if we reflect on one of the accidents which happened. On a certain occasion, after the cooling of a great casting had been completed, it was found, on withdrawing the speculum, that it was cracked into two pieces.
The remainder of the scene and its disposition is given in the fourth scene of the second act. There must be a curtain over the figures, which may be dropped and conceal them on occasions. WALLENSTEIN at a black table, on which, a speculum astrologicum is described with chalk. SENI is taking observations through a window. WALLENSTEIN. All well and now let it be ended, Seni.
Speculum metal and steel have been tried for the cylinder faces, but only with moderate success. In some cases the brass gets into ruts; but the most prevalent affection is a degradation of the iron, owing to the action of the steam, and the face assuming a granular appearance, something like loaf sugar.
This reference alludes to a windmill which I erected on the top of my workshop, to drive the apparatus below. It was the mirror of a reflecting telescope which was in progress. The windmill went on night and day, and polished the speculum while I slept. In the small hours of the morning I keeked through the corner of the window blinds and saw it hard at work.
It is important that this cauterizing fluid should be rather strong so that after a certain number of touches a rather firm eschar is produced. In all these manipulations in the nose Arculanus recommends that the nose should be held well open by means of a nasal speculum.
This was done according to the plan proposed by Lemaire in 1732 by slightly inclining the speculum so as to enable the image formed by it to be viewed with an eye-glass fixed at the upper margin of the tube. The observer thus stood with his back turned to the object he was engaged in scrutinising.
Having made a wooden pattern for my intended 8-inch diameter speculum, and moulded it in sand, I cast this my first reflecting telescope speculum according to the best book instructions. Even glass, brittle though it be, is strong in comparison with speculum metal of the above proportions, though, as I have said, it yields the most brilliant composition.
It was called a speculum oris. The dotted lines in the figure on the right hand of the screw, represent it when shut, the black lines when open. It is opened, as at G H, by a screw below with a knob at the end of it. This instrument is known among surgeons, having been invented to assist them in wrenching open the mouth as in the case of a locked jaw. But it had got into use in this trade.
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