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When all his machines are in this pofition his correfpondent 

 again turns his pointer belonging to the place of hundreds to 

 Two, where it is to remain till he receives another word, and fo 

 on till all that is meant to be faid is finifhed. To denote that 

 his communication is finiflied J Thousands and Units are to 

 be vibrated backwards and forwards, with the point downwards 

 like a pendvilum, till the fame is done at the oppofite flation. 



If any interruption takes place on either fide from a cloud, 

 a fhower or any accident, it is pointed out by vibrating Thou- 

 sands and Units, with their points upwards, which fignal mud 

 be repeated from the oppofite ftation. Whoever has made the 

 fignal of interruption muft make a fignal of recommencement, 

 when he is ready to proceed, by vibrating Hundreds and Tens 

 with their points upwards ; when this is anfwered (but not be- 

 fore) the bufinefs may proceed. It fliould be obferved in general 

 that every fignal fliould be anfwered. 



It requires fome fteadinefs to abide by thefe fignals, but if 

 they are patiently adhered to the fuccefs that they enfure will 

 foon convince the operator of their utility. Without them 

 every thing would be in confufion ; by their interpofition per- 

 fpicuity and order are perfectly infured. 



R 2 In 



t I ufe the words Thoufands and Units here and in the reft of this defcription fgr 

 the pointers or machines that ftand in the numerical place of thoufands and units. 



