Researches on the Visual Organs of the Trilobites, by Gustaf Lindströ 67265 [Subtitle: K. Svensk. Vetensk. Akad. Handlingar. Bd. 34. No. 8.] [Full title: Researches on the Visual Organs of the Trilobites] [Full author's name: Gustaf Lindström] [author: Gustaf Lindström] [Link: https://www.gutenberg.org/6/7/2/6/67265] [Files: 67265-0.txt; 67265-h.htm] Thanks to Tom Cosmas produced from materials provided by Hathi Trust and placed in the Public Domain. Regards, Al