H
Haeckel, Professor, on Homo alalus, [370], [380];
on sounds made by apes, [374]
Hague on sign-making by ants, [93], [94]
Hale, Dr. H., on spontaneous invention of words by children, [138-144];
on the origin of languages, [259-263]
Hamilton, Sir William, on ideas as abstract and general, [24], [25], [79], [80]
Harper, F., on Greek tenses, [301]
Haughton, Sir Graves, on roots of languages, [275]
Hebrew. See [Language]