From Erasmus Alvey Darwin [May–June 1858]1
The obtuse ∠ of the Dodec,2 placed with its axis vertical call its highth above the horizontal plane (h) h side of hexagon of bees cell 1.414 h 0inch 125 1.414 0.088 [DIAGRAM HERE] center of Dodec h
Calculations relating to bees’ cells.
Please cite as
Darwin Correspondence Project, “Letter no. 2195,” accessed on 29 March 2017, http://www.darwinproject.ac.uk/DCP-LETT-2195