1(56 DISEASES CLASS II. 1. 2. 3. 



cious to mosten the eye than solutions of lead. Tincture of 

 opium diluted. Extract of belladonna. New vessels from the 

 inflamed tunica adnata frequently spread like a fly's wing upon 

 the transparent cornea, which is then called Pterigium. To 

 stop the growth of this, the principal vessels should be cut through 

 with a lancet. When the inflammation begins to decline, after 

 due evacuation any stimulating material put into the eye increases 

 the absorption, which soon removes the new red vessels; which 

 has given rise to a hundred famous eye-waters, and eye-doctors; if 

 these stimulating materials are used too soon, the inflammation 

 is increased by them. See Sect. XXXII. 2. 10. Class I. 2. 

 2. 13. 



There is another ophthalmia, which attends weak children, 

 and is generally esteemed a symptom of scrofula, as described in 

 Class II. 1. 5. 3. and another, which is of venereal origin, 

 mentioned in Class II. 1. 5. 2. both which maybe termed oph- 

 thalmia superficialis. 



3. Phrenitis. Inflammation of the brain is attended with in- 

 tolerance of light and sound; which shews, that the extremities 

 of the nerves of those senses are at the same time inflamed; it is 

 also attended with great pain of the head, with watchfulness, and 

 furious delirium. The violent efforts these patients are said 

 sometimes to exert, are owing to the increased secretion of sen- 

 sorial power in the brain; as all other inflamed glands have a 

 greater circulation of blood passing through them, and a greater 

 secretion in consequence of their peculiar fluids, as in the hepa- 

 titis much more bile is generated. 



M. M. Venesection. Cathartics. Torpentia. Foment the 

 head with cold water for hours together. Or with warm water. 

 Cool airy room. Afterwards cupping on the occiput. Leeches 

 to the temples. When the patient is weakened a blister on the 

 head, and after further exhaustion five or six drops of tincture of 

 of opium. 



4. Peripneumonia. Inflammation of the lungs. The pulse is 

 not always hard, sometimes soft; which is probably owing to a 

 degree of sickness or inaction of the stomach; with dull pain of 

 the chest; respiration constantly difficult, sometimes with erect 

 posture; the face bloated and purplish; cough generally with 

 moist expectoration, often stained with blood. 



When the difficulty of respiration is very great, the patient is 

 not able to cough; in this situation, after copious bleeding, the 

 cough is liable to return, and is so far a favourable symptom, as 

 it shews sorn^ ibatement of the inflammation. 



A pcripneumony frequently occurs in the chin-cough, and 

 destroys the patient, except immediate recourse be had to 



