FULLER Q UO TA TIONS FROM ZO ONOMIA .' 2 1 5 



tion, and also with some acquired habits or propensities 

 peculiar to the parents; the former of these are in 

 common with other animals; the latter seem to dis- 

 tinguish or produce the kind of animal, whether man 

 or quadruped, with the similarity of feature or form to 



the parent."* 



**#*** 



Going on to describe the gradual development of the 

 embryo, Dr. Darwin continues : 



"As the want of this oxygenation of the blood is 

 perpetual (as appears from the incessant necessity of 

 breathing by lungs or gills), the vessels become extended 

 by the efforts of pain or desire to seek this necessary 

 object of oxygenation, and to remove the disagreeable 



sensations which this want occasions." f 



****** 



"The lateral production of plants by wires, while 

 each new plant is thus chained to its parent, and con- 

 tinues to put forth another and another as the wire 

 creeps onward on the ground, is exactly resembled by 

 the tape-worm or taenia, so often found in the bowels, 

 stretching itself in a chain quite from the stomach to 

 the rectum. Linnaeus asserts * that it grows old at 

 one extremity, while it continues to generate younger 

 ones at the other, proceeding ad infinitum like a sort 

 of grass ; the separate joints are called gourd worms, 

 and propagate new joints like the parent without end, 

 each joint being furnished with its proper mouth and 

 organs of digestion.' " J 



Zoononiia,' vol. i. p. 484. t Ibid. p. 485. 



I Ibid. p. 493. 



