NO. V. WEIGHTS AND MEASURES, DOSES, ETC. 481 



The degrees of heat are to be measured by Fahrenheit's thermometer. 

 By a boiling heat, is intended that which is marked by the two hundred 

 and twelfth degree : by a gentle heat, any degree between ninety and one 

 hundred. 



A water bath is made when any article contained in its own vessel is 

 exposed either to hot water or the vapour of boiling water. 



A sand bath is made of sand gradually made hot, in which any article 

 contained in its proper vessel is placed. 



DOSES PROPER FOR DIFFERENT AGES. 



The doses mentioned in this work are those proper for an adult ; we 

 therefore subjoin the following table, by which, the quantity for an adult 

 being known, the dose suitable for younger persons may be ascertained. 

 For an adult, suppose the dose to be One, as one drachm. 

 A person under 20 years will require only two-thirds. 



14 one-haU. 



7 one-third. 



4 one-fourth. 



3 one-sixth. 



2 one-eighth. 



1 one-twelfth. 



No. V. 



CLASSES OF INDIGENOUS PLANTS CONSIDERED AS AGENTS 

 OF THE MATERIA MEDICA. 



The following arrangement of Medicinal Plants according to their mode 

 of operation is given instead of an alphabetical list of diseases, and will 

 (provided the disease and its causes are accurately understood) assist the 

 reader in selecting appropriate remedies ; it will also indicate those plants 

 which may be substituted for others, and will enable the prescriber to com- 

 bine those agents which produce similar effects, thereby increasing the effi- 

 ciency of the remedy. The limits and design of this work would not admit 

 of an explanation or dictionary of Medical Terms, which, to be practically 

 useful, must be something more than a mere list of synonymes ; such, how- 

 ever, may be found in " Hooper's Medical Dictionary," and a few similar 

 works. 



ANODYNE.— See Narcotic. 



ANTHELMINTICS. 



Remedies which expel worms from the intestinal canal. 



VOL. II. K K 



