of apertures by which water flows out.
[3] A book of water contained in vessels with air, and of its movements.
[4] A book of the motion of water through a syphon. [Footnote 7: cicognole, see No. 966, 11, 17.]
[5] A book of the meetings and union of waters coming from different directions.
[6] A book of the various forms of the banks through which rivers pass.
[7] A book of the various forms of shoals formed under the sluices of rivers.
[8] A book of the windings and meanderings of the currents of rivers.
[9] A book of the various places whence the waters of rivers are derived.
[10] A book of the configuration of the shores of rivers and of their permanency.
[11] A book of the perpendicular fall of water on various objects.
[12]