Untersuchungen über die Gehäusebildung bei Appendicularien (Oikopleura dioica Fol)
-[Reports 3 haploid chromosomes in sperm and oocytes, one beign longer than the others. Also reports an observation of 7 chromosomes in a somatic mitotic cell.](https://www.jstor.org/stable/43261846)
+[Reports 3 haploid chromosomes in sperm and oocytes, one beign longer than the others. Also reports an observation of 7 chromosomes in a somatic mitotic cell. “Die zur Untersuchung benutzten Tiere stammten ausschließlich aus dem Wattenmeer der Deutschen Bucht.” (all animals were collected from the Wadden sea)](https://www.jstor.org/stable/43261846)