310 LINN^US. 



VI. QuiETALEs. Diseases in which the voluntary and 

 involuntary motions and the senses are impaired. 



VII. MoTORii. Diseases attended with involuntary 

 motion of parts whose action is ordinarily under the in- 

 fluence of the will. 



VIII. SuppRESsoRii. Diseases characterized by op- 

 pression of the organs, or impeded excretions. 



IX. EvAcuATORii. Diseases attended with increased 

 excretion. 



X. Deformes. Diseases causing deformity of the 

 body, or change of colour in the skin. 



XI. ViTiA. Cutaneous, external, or palpable diseases. 



Systems of nosology are no doubt useful or con- 

 venient, in the same manner as systems of zoology 

 and botany ; but so complicated are the phenomena of 

 Nature, and so diversified her productions, that no 

 arrangement, made according to any principles 

 hitherto assumed, can possibly discriminate objects 

 in conformity with all their connexions. If this 

 remark required illustration, it might readily be 

 afforded by the mere inspection of any one of the 

 Linnsean classes or orders. Thus, in the class Vi- 

 tia there are eight orders. 



1. Humoralia. Diseases attended with vitiated or ex- 

 travasated fluids ; as emphysema, cedema, inflammation, 

 abscess, and gangrene. 



2. Dialytica. Solutions of continuity j as fracture, dis- 

 location, contusion, wound, laceration, burn, excoriation, 

 chapped skin. 



3. Eoculcerationes. Purulent solutions of continuity ; 

 as ulcer, cancer, caries, fistula, whitlow. 



4. Scabies. Cutaneous diseases ; as lepra, itch, pim- 

 ples, warts, pustule, eschar. 



5. Tumores. Tumours or swellings ; as aneurism, 

 varix, scirrhus, anchylosis, ganglion, exostosis. 



