[177] In Chapter XIV. I have given the reasons why the Mý-vatn mines were not recommended by the Danish engineers.—R. F. B.

[178] Jukes and Geikie, Manual of Geology, 3d edition, p. 55.

[179] Liebig’s Familiar Letters on Chemistry, p. 152.

[180] Ure’s Dict., vol. ii., p. 432.

[181] Simmond’s Dictionary of Trade Products, p. 367; Muspratt’s Chemistry, vol. i., p. 320.

[182] Liebig’s Letters, p. 149.

[183] Simmond’s Dictionary of Trade Products, p. 351.

[184] See Exports for 1872.

[185] Liebig’s Familiar Letters on Chemistry, p. 150.

[186] See Smee’s My Garden.