CLASS I. 1. 5. 1- OF IRRITATION. 



ORDO I. 



Increased Irritation. 



GENUS V. 



With increased Actions of the Organs of Sense. 

 SPECIES. 



1 . Viscus acrior. Acuter sight. There have been instances of 

 people, who could see better in the gloom of the evening, than in 

 the stronger light of the day; like owls, and bats, and many qua- 

 drupeds, and flying insects. When the eye is inflamed, great 

 light becomes eminently painful, owing to the increased irrita- 

 tive motions of the retina, and the consequent increased sensation. 

 Thus when the eye is dazzled with sudden light, the pain is not 

 owing to the motion of the iris; for it is the contraction of the 

 iris, which relieves the pain from sudden light; but to the toa 

 violent contractions of the moving fibres, which constitute the ex- 

 tremities of the optic nerve. 



2. jluditus acrior. The irritative ideas of hearing are so in- 

 creased in energy as to excite our attention. This happens in 

 some diseases of the epileptic kind, and in some fevers. Hence 

 the whispering of the currents of air in a room, the respiration of 

 the company, and noises before unperceived, become trouble- 

 some; and sounds louder than usual, or unexpected, produce start- 

 ing and convulsions. 



M. M. Put oil of almonds into the ears. Stop the meatus 

 auditorius with cotton wool. Set the feet of the patient's bed 

 on cushions, or suspend it by cords from the ceiling. 



3. Olfactus acrior. The irritative ideas of smell from the in- 

 creased action of the olfactive nerve excite our attention. Hence 

 common odours are disagreeable; and are perceived from variety 

 of objects, which were before thought inodorous. These are 

 commonly believed to be hallucinations of the sense. 



M. M. Snuff starch up the nostrils. 



4. Gustus acrior. The irritative ideas of taste, as of our own 

 saliva, and even of the atmospheric air, excite our attention; and 

 common tastes are disagreeably strong. 



M. M. Water. Mucilage. Vegetable acids. Scrape the tongue 

 clean. Rub it with a sage-leaf and vinegar. 



5. Tactus acrior. The irritative ideas of the nerves of touch 



