[3]

Loc. cit.

[4]

Abhandl. d. k. Akad. d. Wiss. Berlin, 1858, p. 28.

[5]

Monogr. d. Radiol., 1862, Taf. ii. p. 253.

[6]

Histologie der Radiolarien, pp. 43-73, Taf. iii.-v.

[7]

Sitzungsb. med.-nat. Gesellsch. Jena, February 16, 1883.