SYSTEMATIC SYNTHESIS OF TISSUES INTO ORGANS. 281 



SECTION V. 



Organs of Sense. 



686. Remark. AFTER A DESCRIPTION OP THE GANGLIA, IT is NAT- 

 URAL TO TAKE UP a description of those organs by which the ganglia are 

 acted upon or excited to action. 



687. THE ORGANS OF SENSE ARE, FIGURATIVELY in 

 case of all of them, and literally in case of touch, the 

 hands by which the ganglia reach out and grasp the 

 various properties of the objects constituting the exter- 

 nal world, and obtain the elementary knowledge needed 

 by the mind to work out the facts of the physical con- 

 stitution of the universe. 



688. The organ of sense is NOT FIRST FORMED, and 

 afterward its nerve, and then its ganglion, but inverse- 

 ly ; the ganglion is FORMED FIRST, and reaches out an 

 appropriate nerve, and the organ of sense is found at its 

 extremity. 



689. Remark. IN CASE OP DEFORMITIES, parts will be defective in 

 the order stated : first,, the organ of sense ; secondly, the nerve ; and -last- 

 ly, the ganglion. If it is wanting, the other two will surely be. 



690. Remark. The simplest of the organs of sense should be first 

 described, particularly as it will be found an element hi some of the 

 compound organs of sense. 



Muscles as Organs of Sense. 



691. THE MUSCLES ARE PRIMARILY organs for the 

 production of mechanical motion, without reference to 

 the direct acquisition of knowledge. But their action 

 in that respect could not be regulated without the degree 

 of every contraction was instantly known by the -mind ; 

 hence it is necessary that every voluntary contraction be 

 attended by a corresponding sensation. 



692. Illus. What clumsy work people would make in their speech 

 unless every contraction of the muscles of speech, after being ordered, 



686. What ? 687. What are ? 688. What? 689. What true ? 

 691. What ? 692. What necessary to speech ? 



