of the diseased conditions of the engines, all complex mechanism is excluded here. disk, or point of entrance of the optic nerve. This is perfor- eye have been effected by the employment of the ophthal-: Better 600 pounds of coal per day in a 10-horse engine ated by the branches of the central… … observation, whilst the observer refilccts its rays into the eye | the darker the veins. Above and a little to the right isa below the cylinder, so as toreduce the temperature of the of the subject by means of a plane or concave mirror, the | spot which is the true center, and at the same time the…
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