3ey2>Jb 
Of Weights and Measures . 2t 
real mark = 128 standard parts, or about 7 grains Troy. 
The assay grain is further divided into halves and quar- 
ters. The Assay mark for Silver is divided as the real 
mark for this metal, namely, into 16 loths, and each loth 
into 18 grains, and the grain into halves and quarters ; 
and the real weight of the silver assay mark is twice that 
of gold, or one pfenning. 
The German assay ers and mineralogists have also the 
Bocimastic Centner , which has generally the actual 
weight of one quentchen (equal to 56.34 grains Troy) 
but is subdivided into 100 docimastic pounds, each of 
which therefore is equivalent to about ~ grain Troy. 
The most common measure of length in Germany is 
the RJiinland foot , to which standard the foot, ell, &c. of 
the different states is usually compared. 
With regard to the length of this measure in English 
inches, the Pied du llhin is said in Peuchet ? s Diet, de 
Commerce, to be n 11 inch. : 7 lines, of the old French 
Pied de Roi , which is 2Z IS. 341 English inches. Hence 
we have the following numbers, viz. 1 Hhinland foot == 
IS. 341 English inches, and therefore 1 Hhinland inch 
= 1.0S84S English inches, and 1 cubic inch Hhinland 
= 1.08769 English cubic inches, = 274.648 Troy grains 
of distilled water ~ S86.31 Nuremb. grains. 
On the other hand, Klaproth, in his analysis of the 
Carlsbad water, and in the other parts of his works, em- 
ploys the cubic inch, which, he says, holds S90 of the 
true Nuremburg grains of distilled water, and which ap- 
pears to be as common a standard of length among the 
German chemists as the Nuremburg is of weight. Now 
according to Gren, 290 Nuremb. grains, = 278.187 Troy 
grains, — 1.10169 English cubic inch, of water, and the 
cube root of 1.101700+ (which hardly differs from 
