Burt Green Wilder,
Popular Science Monthly
(1874)
“ I do not know from which spinners the various parts of the net are formed. The spinning mammulæ, or spinnerets, are represented in Fig. 6. They form a little group upon the lower surface of the abdomen, near its hinder end. In a state of rest, they are closely approximated, but when in use they are more or less widely spread apart like so many fingers or short legs. Indeed, there is reason to regard the spinners as corresponding in essential structure with the true legs of the spider. They are jointed or articulated, and capable of considerable movement. ”
