where more than just a sentence is added or removed. Other things to notice is how some words are spelt or punctuated differently throughout the book, such as;

Blood Vessels
Blood-Vessels
Bloodvessels

I've tried to keep these as close to the original book as possible.

University Correspondence College Tutorial Series.

-Text-Book Of Biology._

by

H. G. Wells,

Bachelor of Science, London., Fellow of the Zoological Society.
Lecturer in Biology at University Tutorial College.

With An Introduction by G. B. Howes,