[1055] Bitter 1904².

[1056] Hue 1892.

[1057] Hue 1914.

[1058] Tuckerman 1872, p. 107.

[1059] [See p. 188.]

[1060] Hue 1908.

[1061] [See p. 152.]

[1062] Olivier 1907.

[1063] Th. Fries 1867.

[1064] Darbishire 1909.