WEIGHTS AND MEASURES. 



xxxvn 



As apothecaries or chemists seldom keep Troy weight beyond 4 or 

 8 ounces, the relation between the Apothecary or Troy pounds and 

 ounces and the common weight, is often required in preparing the offi- 

 cinal preparations, and is here given ; the quarter ounce being used 

 instead of the Avoirdupois dram, as the latter weight is seldom or never 

 kept by chemists or dispensers. 



Although the quarter ounce is only 109 grains 375, it will be conve- 

 nient, in adding two or more of these reductions together, to take the 

 even 110 grains as its value. 



The Scotch pound tronc is equal to 9600 grains Scotch Troy weight, 

 or 527 gr. English 925: the^ftcotch Dutch Troy jjound is equal to 

 7680 Scotch grains, or 7620 gr. Engl. [{ : both pound^Ere divided into 

 16 ounces, the ounce Dutch equal to 476 gr. Engl. 3. \ 



Besides the regular weights, articles arc sometimes ifj^ted by the 

 weight of .seeds or kernels, as the weight of a nutmeg, o^jt so many 

 black pepper-corns. In India they use the paddy weight,^ that of 

 the grains of rough rice, each of which is equal to about 2-5ths of a 

 grain ; the gulivindum weight, or that of a jumble bead, equal to about 

 1 grain 5-16ths; the retti weight, equal to about 2 grains 3-16ths. 

 Gold coins arc sometimes used, as the gold fanam weight, equal to 8 

 grains ; the star pagoda weight, equal to about 84 g^aios. 



