A History of Inventions, Discoveries, and Origins, Volume 2 (of 2)

by Johann Beckmann

[422] Mundus Subterraneus, vol. i. p. 254.

[423] Cursus Mathemat. p. 455, icon. 20.

[424] Collegii Experiment. pars ii. Norimb. 1715, 4to.

[425] Nuovi Ritrovamenti. Roma, 1696, fol.

[426] Philosoph. Transact. 1675: where an engraving is given of all the parts.

[427] Journal des Observations Physiques et Math. Par. 1714, 4to.

[428] Philosoph. Transact. No. 384, p. 140; and No. 413, p. 277.

[429] Comment. Acad. Petrop. v. p. 274.

[430] In his Versuchen. Halle, 1737, 8vo, i. p. 556.

[431] Theatrum Hydrostaticum.