V. MASS. 87 



383. Model of a Roman Balance, with sliding weight of 

 To grammes, and stand. 



Physical Institute of the University of Halle (Professor 

 Knoblauch, Director). 



C. WEIGHTS. 



346. Five Standard Weights derived from the polar stand- 

 ard of length. Prof' Hcnnessy, F.R.S. 



One of these weights is equivalent at 15 centigrade to a cube of distilled 

 water whose side is the one hundred millionth part of the earth's polar 

 axis. The others are submultiples of this weight, and the Astern is 

 suggested in connexion with the polar standard proposed. See " Essay on a 

 Uniform System of Weights, Measures, and Coins of All Nations," by Pro- 

 fessor Henuessy. 



346a. Series of Massive Copper Weights, standards of 



I gramme up to 20 kilogrammes, with subdivisions in platina. 



II Necessaire " for inspector of weights and measures on his rounds, 

 weighing about 10 kilos., and containing every requisite for testing 

 scales, of weights, measures of capacity, and of length, and 

 apparatus for stamping. 



Messrs. Collot Brothers, Boulevard de Montrouge, Paris. 



346b. Ancient French Standard Weight of the city of 

 Rouen, of brass, in the form of a series of cup weights in a 

 closed box of ornamental shape, weighing altogether 8 Ibs. of the 

 old poids de marc de Charlemagne. Presented to the Stan< lards 

 Department in 1869 by Colonel Le Contens, Viscount of Jersey. 



H. W. Chisholm. 



346c. Weight, wrought iron, ornamented with arabesques, 

 flowers, and masks. Made for the old Mint at Madrid in the 17th 

 century by the iron-master Salinas. 



Archaeological Museum, Madrid. 



360. Physical Weights. Hugo Schickert, Dresden. 



361. Eight Sets of Weights, for analytical purposes. 



G. Westphal, Celle. 



The first of these weighs from 1 kilogramme downwards, the second from 

 500 grammes downwards, the third from 100 grammes, the fourth, fifth, and 

 sixth from 50 grammes, the seventh from 10 grammes, and the eighth from 



5 grammes downwards. 



362. Standard Weights. Each weight consists of one piece 

 of solid metal adjusted by the gilding process. 



G. Westphal, Celle. 



These consist of a 1 kilogramme weight, a set of weights weighing from 



1 kilogramme downwards, and a set of standard weights with pin adjustment 

 weighing from 500 grammes downwards. 



362a. Box of Weights, containing two kilos, and fractions of 

 a kilo. Deleuil, Paris. 



