= 
_ ascribed to direct association between the motions of 
and those of the heart, 
rt, or it may be owing to the nausea 
which being a disagreeable sensation, is equivalent to an abstrac- 
9, of stimulus. . 
is supposed also, that a sympathy exists between the stomach © 
and the surface of the body, so that the state of the vessels of the 
one part 1s communicated to the vessels of the other. 
_ ing is frequently followed by diaphoresis. ooo 
i" 
Emetics powerfully promote absorption. 
They often occasion increased evacuation 
more especially when they haye been given in too sm e te 
excite vomiti ing, an piece Srining isin from their stimu ee 
_ Lastly, several of the effects of vomiting have been ascribed to the 
agitation of the hody, and to the compression of the viscera, by the 
action of the diaphragm and abdominal muscles. —~ 
Emetics are employed in many diseases. 
When any morbid affection depends upon, or is connected with 
over-distention of the stomach, or the presence of acrid indigestible 
matters, vomiting gives speedy relief. Hence its utility in i npairec 
appetite ; acidity in the stomach ; in intoxication, and where poisc 
have been swallowed. Se ae eae 
From the pressure of the abdominal viscer 
have been considered as serviceable in 
calculi obstructing the hepatic ducts. 
The expectora: | 
and phthisis have been ascribed to a similar pressure extended 
In the different varieties of febrile affections, much adv. 
derived from exciting vomiting, especially in the very commenc 
ment of the disease. In high inflammatory fever, it is considered 
as dangerous; and in the advanced stage of typhus it is prejudicial. 
Emetics given in such doses as only to excite nausea, hat 
found useful in restraining hemorrhage. BH 
Different species of dropsy have been cured by vomiting, f 
having excited absorption. T’o the same effect, perhaps, is 0} 
the dispersion of swelled testicle, bubo, and other swellings, whi 
has occasionally resulted from this operation. Ps. 
The operation of vomiting is dangerous or hurtful in the following 
cases : where there is determination of blood to the head, especially 
in plethoric habits ; in visceral inflammation ; in the advanced stage. 
~ 
of pregnancy ; in hernia, and prolapsus uteri, and wherever there - 
exists extreme general ‘ 
__ The frequent use of emetics weakens the tone of the stomach. _ 
sc; : ‘is r+ 7 o? bil : a 
power of emetics, and their utility in catarrh — 
An emetic should always be administered in the fluid form.” Its 
operation may be promoted by drinking any tepid diluent or bitter 
infu: . i 4h: 4 
the vegetable, and those from the mineral kingdom. 
_ The individual emetics may be arranged under those derived — 
