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Place on a sheet of white paper a circular piece of blue silk, about four inches in
diameter, in the sunshine; cover the centre of this with a circular piece of yellow
silk, about three inches in diameter; and the centre of the yellow silk with a circle
So if a firestick be whirled round in the dark, a luminous circle appears to the
observer; if it be whirled somewhat slower, this circle becomes interrupted in one
part; and then the time taken up in such a revolution of the stick is the same that
... and in a fever with great debility only two lines. It follows that the arterial fibres
contračt in health from a circle of twelve lines in circumference to a circle of three
lines in cirG 4 cumference, - | 83 OF STIMULUS Secr. XII. I.4. cumference, that.
While the arterial fibres in the fever with debility would twice contračt from a circle
of six lines to a circle of three lines; that is while they move through a space equal
to six lines. Hence though the frequency of pulsation in sever be greater as two ...
... at bright objećts; thus when a fire-stick is whirled round in the night, there
appears in the eye a complete circle of fire; the a๋tion or configuration of one part
of of the retina not ceasing before the return of the. Sect, XII. I. 5. AND EXERTION.
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LibraryThing ReviewUser Review - Devil_llama - LibraryThing
Written by the grandfather of Charles Darwin, this book is a masterful treatise on the medical disorders and how to treat them. Primarily of interest to people who are interested in the period ... Read full review