[555.] Dr. Hanssen's various papers on the subject are collected in his Agrarhistorische Abhandlungen, Leipzig, 1880.
[556.] Jena, 1879.
[557.] 'Georg Hanssen, als Agrar-Historiker.' Von August Meitzen, 1881. Tübingen.
[558.] See Hanssen's chapter, 'Die Feldgraswirthschaft deutscher Gebirgsgegenden,' in his Agrarhist. Abhandl., pp. 132 et seq.
[559.] Landau, pp. 16–20.
[560.] See the interesting examples given in Meitzen's Ausbreitung, with maps.
[561.] See Hanssen's chapter on the 'Einfeldwirthschaft,' Agrarhist. Abhandl. pp. 190 et seq.
[562.] Hanssen, p. 496.
[563.] As to this part of the question, see especially Meitzen's Ausbreitung.
[564.] Landau, 'Die Territorien,' pp. 32 et seq.