IV. VOLUME. 79 



322a. Series of Standard Measures of Capacity, in 



copper, with glass discs, from the centilitre to the double 

 decalitre. (11 measures.) 



Messrs. Collot Brothers, Boulevard de Montrouge, Paris. 



324. The Standard Pint, popularly known as " The Stirling 

 Jug." The Smith Institute, Stirling. 



This measure was entrusted to the town by Act of (the Scottish) Parlia- 

 ment, in the year 1437. Sometime previous to 1745 it had been borrowed 

 by a coppersmith for the purpose of making others, and as he joined the 

 insurgents in " 45 " it was lost sight of. On his not returning, his effects were 

 sold, with the exception of a few that were thrown into a garret as rubbish ; 

 among these, in 1752, the Stirling Jug was found, after some years of patient 

 and unwearied search (by Rev. A. Bryce, of Kirknewton). It is made of 

 brass, and is in the shape of a hollow truncated cone, weighing 14 Ibs. 10 oz. 

 1 dr. 18 grs. Scottish troy. Diam. of mouth 4.17 English in., of the bottom 

 5-25 in., and depth 6 in. On the front, near the mouth, is a shield in relief, 

 bearing a lion rampant, the Scottish national arms, near the bottom is ano- 

 ther, bearing an ape passant gardant, supposed to be the arms of the foreign 

 maker. 



324a. Russian Standard Measures of Capacity (Vedro, 

 V., \ V., T \J- V., T ^ V.). Siemens and Halske, Berlin. 



These measures, made of bronze, have a coni- 

 cal shape, newly adopted in Russia, for standard 

 and trade measures of capacity. In these mea- 

 sures the inner diameter, A B, of the bottom 

 is equal to an inner side, A C, and double 

 diameter, C D, of the orifice. By very sim- / 



pie contrivance, such trade measures might / 

 be verified, approximately, by (linear) mea- / jj 

 surement of A B, A C, and C D. 



325. Set of Standard Measures for Alcohol, conical 

 shaped, in order to diminish the possibility of evaporation of the 

 liquid. Siemens and Halske, Berlin. 



322. Measures of Capacity, according to natural principles. 



Hans Baumgartner, Basle. 



WATER METERS. 



321. Schmid's New Water Meter. A. Schmid, Zurich. 



This meter consists of two of Schmid's patent hydraulic motors, coupled 

 at right angles, and enclosed in a water-tight casing. They are set in motion 

 by the force of the fluid they have to measure. At each revolution a volume 

 equal to the contents of four cylinders must pass. The pressure required to 

 keep tight the oscillating surfaces of the cylinders is furnished by the 

 difference of pressure at inlet and outlet, which is thus self-regulating. The 



