402.
[221] See _Fortnightly Review_, New Series, vol.iii.April 1868, p.

352.
[222] This appeared in the _Rivista Contemporanea Nazionale Italiana_, and was translated and given to the English public in _Scientific Opinion_ for September 29, October 6, and October 13, 1869, pp.

365, 391, and 407.
[223] See _Scientific Opinion_, of October 13, 1869, p.

407.
[224] See _Scientific Opinion_ of September 29, 1869, p.

366.
[225] _Fortnightly Review_, New Series, vol.iii.April 1868, p.