Note 205 — No. XXIII.
Reading edition
Ver. 12. Conchois, or Conchylis—A most beautiful and picturesque curve; it bears a fanciful resemblance to a conch shell. The conchois is capable of infinite extension, and presents a striking analogy between the animal and mathematical creation—every individual of this species containing within itself a series of young conchoids for several generations, in the same manner as the Aphides and other insect tribes are observed to do.