44 



CHAPTER III. 



PHYSIOLOGICAL REMARKS. 



Nervous System Organs of Circulation and Respiration The Digestive 

 Organs The Kidneys Examination of the Dog when attacked with 

 Di sease Forms in which Medicines should be given Best mode of 

 administering Remedies. 



NERVOUS SYSTEM. In these railroad days there is a good illustra- 

 tion of the office of this important organ, which may be compared 

 to the electric telegraph. The brain is the central office with a 

 manager (to represent the intelligence of the animal supposed to 

 reside in his brain) always present. This central manager issues 

 his orders to all parts by means of certain wires (corresponding to 

 the nerves of motion), and is informed of any stoppage or accident, 

 or other cause for interference on his part, by another set of wires 

 (the nerves of sensation) ; while again every station has a means 

 of communicating with every other station by a different system 

 of wires (the nerves of organic life), which have their separate 

 ganglia or the lesser station-masters. Here, then, you have a 

 tolerably exact counterpart of the nervous system, and in fact 

 nearly all which is known of the general action of the nerves is, 

 that they resemble in their functions the galvanic battery. It is 



