Page [64]: Changed * * * to ... (preferred form for ellipsis).
Originally: This * * * is readily overcome by the frequent
Page [64]: Changed "placd" to "placed".
Originally: surface of the book on which it was placd,
Page [68]: Changed "X" to "×".
Originally: cells (10 mm. X 3.5 mm.)
Page [70]: Changed "chitinizd" to "chitinized".
Originally: Changed area of microscopic chitinizd spicules,
Page [71]: Changed "Lengh" to "Length".
Originally: Pupa.—Lengh, 9.1-12.8 mm.
Page [75]: Retained "molloscs", as a possible spelling variant for
"molluscs". However, it may be a typo.
Originally: forms are grouped among the simplest of the molloscs.
Pages [75], [76]: Retained "Stempel" and "Stempell" spelling variations.
Page [76]: Changed "once" to "one".
Originally: the pedal ganglion at once place seems to be made up
Page [76]: Changed all instances of "X" to "×" to indicate magnification.