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Doc. 205.] 37
SWEDENBORG’S TRAVELS IN 1733.
a distance of 1680 feet. The author instituted also an experi
ment for the same height of thirteen feet, the diameter of the
opening being three lines: in the thinnest kind of a lamina of
iron, 607 cubic inches flow out; in a copper lamina, but in
the form of a trunk (sed trunci instar), 713 cubic inches flow
out. After a cylindrical tube of the length of thirteen lines
was affixed to the opening, 809 cubic inches of water flowed
out in the same time ; after the tube had been shortened and
made of a conical shape, 889 cubic inches flowed out ; after it
was shortened still more, so that it was only seven lines long,
907 cubic inches flowed out. After these are reduced into the
velocities acquired, the following ratios are obtained : 1030,
1064, 1210, 1373, 1508, and 1536 feet. The title of Buteonus’
book is here added,* De fluentium aquarum mensura (On the
measurement of flowing water), with notes, 1554.
Borelli has written concerning the motion of animals ; he
has opened a wide field for mathematics and medicine. Ber
nouilli also has instituted many investigations into the motion
.
of the muscles. Vercelloni [has written a work with this title] :
Psychologia, seu motuum animalium et reciprocorum machinæ
animalis theoria medica, omnes humanos actus autoptica etfacili
quamvis hactenus inaudita methodo explanans (Psychology, or
a medical theory respecting the motions of animals and the
reciprocal motions of the animal machine, by which all human
actions or motions are explained to the sight and by an easy,
although hitherto unheard of, method), Asti.
July 20. In the company of Messrs. Michaeli and Rüger
I was in the museum of natural history. There I first examined
a great variety of petrifactions of all kinds, in slate, lime- stone,
and white clay. Six Ilmenau specimens which were always in
a central (nucleari) or round stone ; there were also so- called
eagle-stones (atites), Florentine dendrites, and others ; figured
crystalline stones of various kinds. Of the vegetable king
dom there were more than 400 species of wood; four statues
of cypress wood, which were very fragrant ; corals of a diversity
in kind and in colour. Of the animal kingdom, animals of
every kind, with their skeletons ; among which was one of a
* See Bibliothèque Italique, Vol. XII, p. 19.
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