Homo, classification of, [160]

Homology in organs of Medusæ, [123]

Homotaxis in geology, [80]

Hooker, Sir Joseph Dalton, [47], [98], [101]

Horse, [68]-[78], [174]

Hospitals in London, [181]

Howes, Professor G.B., [173], [174], [207], [277]

Humboldt, [92]

Hume, David, [217], [218], [223], [240], [255], [256]

Hume, David, quotations from, [223], [241], [256]