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OF SYSTEMS PECULIAR TO CERTAIN 

 APPARATUS. 



Q. What systems have heretofore been considered? 



*#. Such as may be termed primitive; such as are com- 

 mon to all parts; those which form the nutritive paren- 

 chyma. 



Q. What tissues remain to be considered? 



ttf. Those which belong to special purposes in the ani- 

 mal economy. 



Q. Explain this more particularly ? 



#. While the above systems are general, there are cer- 

 tain others which are not so, but are appropriated to cer- 

 tain functions separately or conjointly. You observe that 

 the bones, muscles of animal life, the cartilages and fibrous 

 tissue appertain to locomotion; while the serous, mucous, 

 and organic muscular systems are particularly directed to 

 digestion, respiration, and circulation. So it is likewise 

 with the glandular tissue which belongs to secretion; other 

 examples might be adduced. 



Q. What further difference is observed? 



t/2. The primitive are universally found and are conti- 

 nuous, as the cellular tissue ; the special tissues are insu 

 lated, and separated from each other by the intervention 

 of organs, as the bones. 





