94 GRAMMAR OF ENTOMOLOGY. 



304. The seven systems of organs and their 

 respective functions are these : bones, for sup- 

 port ; muscles, for motion ; air-tubes, for respi- 

 ration ; blood-vessels, for circulation ; alimentary 

 canal, for digestion; nerves, for sensation; and 

 the organs of the sexes, for reproduction. ' 



305. The fluids in insects are blood and 

 various secretions : the blood is supplied by 

 nutriment transmitted from the alimentary canal : 

 the solid parts are renewed by secretions from 

 the blood. 



306. Motion, in the animal frame, is of two 

 kinds ; dominant motion, which acknowledges 

 not the authority of the mind ; for instance, 

 circulation of the blood ; and subservient motion, 

 which operates only in accordance with the behests 

 of mind. 



307. Sensation is the ultimate power of matter 

 so perfected as to take cognizance of facts beyond 

 the limits of the body : sensation is of two kinds ; 

 that derived from external objects, which appears 

 the aim of animal life, and conduces to its main- 

 tenance, and that which conveys information 

 from matter to mind, and behest from mind 

 to matter. 



308. Mind is the commanding element ; the 

 other elements in acting obey it, but in existence 

 and characters are independent of it : no powers 

 of mind can prevent the existence, or change the 

 characters of matter, motion, or sensation : mind 



