412 BIOLOGY. 



see, is therefore in an organism to emit light or shine 

 light-sense. 



2426. The signification of the senses is twofold ; they 

 are anatomical systems which have become nerves, and on 

 that account also elements that have attained unto sensa- 

 tion. 



1. Sense of feeling vascular, tegumentary, nutritive 

 sense, earth-sense. 



2. Gustatory sense intestinal, digestive sense, water - 

 sense. 



3. Olfactory sense pulmonic, respiratory sense, air- 

 sense. 



4. Auditory sense osseo-muscular, motor sense, aether - 

 sense. 



Matter-Sense. 



5. Visual sense nervous, tension-sense, light-sense. 



2427. The sensorial organs are not simply combina- 

 tions of the anatomical systems with the nerves, but also 

 with the bones and muscles. These have been entirely 

 taken up into the signification of the animal body. 



2428. Each sense has its own nervous, osseous, and 

 muscular system. 



2429. The sense of feeling has its bones and muscles 

 in the limbs. 



2430. The sense of taste, its bones in the lingual 

 bone, its muscles in and upon the tongue. 



2431. The sense of smell, its bones in the nasal bones, 

 its muscles being frequently very much developed in the 

 snout or proboscis. 



2432. The sense of hearing, its bones in the auditory 

 ossicles, its muscles in the auditory conch. 



2433. The sense of sight, its bones in a ring sur- 

 rounding the sclerotic coat and in the eyelids, its 

 muscles in the ocular muscles. 



2434. Besides the proper sensorial nerves, each organ 

 of sense is provided with nerves for the motor system 

 and for the vegetative systems, especially those of secre- 

 tion. 



