Class I. i. 5. p. OF IRRITATION, 47 



ORDO I. 

 Increafed Irritation, 



GENUS V. 

 With increafed Aclicns of the Organs ofSenfr, 



SPECIES. 



1. Vifus acrior. Acriter fight. There have been in fiances of 

 people, who could fee better in the gloom of the evening, than' 

 in the ftronger light of the day j like owls, and bats, and many 

 quadrupeds, and flying infects. When the eye is inflamed, great 

 light becomes eminently painful, owing to the increafed irrita- 

 tive motions of the retina, and the confequent increafed fenfa- 

 tion. Thus when the eye is dazzled with fudden 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 fudden light ; but to the 

 too violent contractions of the moving fibres, which conftitute 

 the extremities of the optic nerve. 



2. Auditus acrior. The irritative ideas of hearing are io in- 

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

 fome difeafes of the epileptic kind, and in fome fevers. Hence 

 the whifpering of the currents of air in a room, the refpiration 

 of the company, and noifes before unperceived, become trouble- 

 fbme j and founds louder than ufual, or unexpected, produce 

 darting, and convulfions. 



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 cuihions, or fufpend it by cords from the ceiling. 



3. Olfatlus acrior. The irritative ideas of fmell from the in- 

 creafed action of the olfaclive nerve excite our attention. Hence 

 commou odours are difagreeable \ and are perceived from vari- 

 ety of objects, which were before thought inodorous. Thefe 

 are commonly believed to be hallucinations of the fenfe. 



M. M. Snuffftarch up the noitrils. 



4. Gujlus acricr. The irritative ideas cf tafte, as of our own 

 faliva, and even of the atmofpheric air, excite our attention 5 and 

 common taftes are difagreeably ftrong. 



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

 tongue clean. Rub it with a fage-leaf and vinegar. 



5. Tail us acrior. The irritative ideas of the nerves of touch 



excite 



