Fig. Ω Rana ad experimentum praeparata.

C C Crura.

D D Nervi sacri, qui in crurales nervos abeunt, quos crurales internos placet appellare.

F Filum metallicum, quod per foramina spinae dorsi trajectum spinalem medullam perforat.

G Cylindrus ferreus.

M Spina dorsi.

Fig. I. Machina electrica.

A Discus.

B Cylindrus ferreus, quo scintilla extorquetur.

C Conductor.

Fig. 2.

C C Crura.

D D Crurales nervi interni.

E Filum ferreum per medullam F trajectum.

G Ferreus cylindrus, quo tangitur filum ferreum, dum scintilla e conductore machinae extorquetur.

H Cylindrus vitreus, quo tangitur filum ferreum E, dum scintilla elicitur.

K K Nervorum conductor.

Fig. 3.

A Phiala vitrea, intra quam praeparata rana est conclusa.

B Filum ferreum cum unco ranae conjunctum.

C Extremitas suspensi fili ferrei, cui adnectitur filum ferreum B.

D Laqueus sericus.

E E E Filum ferreum, quod conjunctum cum filo ferreo B efficit nervorum conductorem, eumque longissimum.

F Uncus ferreus, cui adnectitur filum ferreum E.

Fig. 4.

C Nervorum conductor.

D Musculorum conductor.

Fig. 5. Leidensis phiala.

A Minuti globuli venatorii intra phialam contenti.

B Conductor phialae.

C Manus ejus, qui scintillam e conductore B extorquet.

Fig. 6.

A Phiala inversa, intra quam continentur globuli venatorii.

B Similis phiala, intra quam est cum animal, tum globuli veneratorii conductoris musculorum vices gerentes.

	The author died in 1798, so this work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 100 years or fewer. This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.
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