172 



VOCABULARY. 



detritus, detritus. 



Loose fragments of rock. 



difference de potentiel, potential 

 difference. 



The difference in degree of electri- 

 fication of two bodies, or parts of the 

 same body, which produces or tends 

 to produce a flow of electricity or an 

 electrical current between them. 



dilatation, expansion, dilatation. 



diluer, to dilute. 



disque-signal, signal-disk, colored 



glass-disk. 

 dissolution, solution. 



A fluid or substance which dissolves 

 other bodies or renders them liquid. 



dissolvant, solvent, dissolvent. 



distribution, distribution, distrib- 

 uting. 



a potentiel constant, distri- 

 bution at constant potential, 

 shunt-system. 



Potential, at any point near or within 

 an electrified body, is the quantity of 



work necessary to bring a unit of posi- 

 tive electricity from an infinite distance 

 to that point. 



distribution a intensite" cons- 

 tante, distribution at constant 

 intensity. 



par re"seau, distribution by 

 branched conductors. 



dorure, gilding. 



au mercure, gilding by amalga- 

 mation, dry gilding. 



doser, to treat with, 

 ductilite", ductility. 

 dydyme, didymium. 

 dynamo a main, hand-dynamo, 

 dynamo electrique, dynamo-elec- 

 tric. 



Producing force by means of elec- 

 tricity; also produced by electric 

 force. 



dynamo a courants alternatifs, 

 alternate-current dynamo, alter- 

 nator. 



E 



Eau de chaux, lime-water. 



de condensation, waste-water. 



forte, aquafortis (strong water). 



*A name given to weak and impure 

 nitric acid. 



eaux basses, low water. 

 Ichafaudage, assemblage, scaf- 

 folding. 



6changeur, sterilizing cylinder, 

 (s')e'chauffer, to become heated. 

 e"clairage, lighting. 

 e"cluse, lock. 



a air, air-lock. 

 e"coulement, efflux. 



e"couler, to flow out, to run off. 

 effet (d'une machine), effect, 

 power. 



a double effet, double-acting. 



Effective work is done on both the 

 forward and the return stroke. 



a simple effet, single-acting. 

 effet perdu, lost power, effect. 

 utile, useful effect, effective 



power, duty. 



61ectrique, electric, electrical. 

 e'iectriquement, electrically. 

 e'lectro-aimant, electro-magnet. 



A magnet which owes its magnetic 

 properties to the inductive action of an 

 electric current. 



flectro-capillaire, electro-capillary. 



Designating certain capillary phe- 

 nomena produced by electricity. 



electro-chimie, electro-chemistry. 



Chemistry as concerned with elec- 

 tricity. 



