[805] Fünfstück 1896.

[806] Fünfstück 1899.

[807] Lang 1906.

[808] Beijerinck 1904.

[809] Wehmer 1891.

[810] Stahel 1911.

[811] [See p. 218.]

[812] Pfeffer 1877.

[813] Pfaff 1826.

[814] Herberger 1830.