Unpublished paper, 'Observations on the anatomy of spiders' by Gotthelf Fischer [von Waldheim] Fischer provides his observations and recollections of the anatomy of his spider specimens, including tarantulas and Solpuga [Solifugae], held at the University of Moscow which were lost in a fire. An ink inscription at top of first page, underlined twice, reads 'Not to be printed.' A footnote at the bottom of the first page reads 'This letter is written in the year 1812 after the burning of the University of Moscow.' Subject: Zoology / Arachnology Communicated by the President [Sir Joseph Banks]. Read to the Royal Society on 12 March 1818. [1812]