58 PHOTO-TELEGRAPHY 



The line from Manchester was shorter and more 

 satisfactory for the selenium machine than the 

 Paris- London line, and the results obtained were 

 very fair. Photographs were frequently tele- 

 graphed to Manchester and published in the Man- 

 chester Courier, while every evening some portrait 

 of topical interest was sent from Manchester to 

 London. Soon after this service began, the Paris 

 lines were again available, and the Paris-London 

 service was again continued. 



Several experiments were made with a view to 

 transmitting landscapes or sporting pictures instead 

 of simple portraits by dividing the original picture 

 into two or three parts and telegraphing one part at 

 a time, afterwards joining up the sections. This 

 method is quite plausible in theory, but unfortu- 

 nately only worked out in practice in the labora- 

 tory. Each portion takes twelve minutes to 

 transmit, and often during such time the condi- 

 tion of the lines would vary sufficiently to render 

 the next portion quite different in character. 

 These differences could have been made good 

 by retouching, had the time available permitted 

 of it. But it must be remembered that where 

 a photograph is telegraphed, it is usually sent 

 at a late hour, and if much time be spent on 

 the retouching, it may be too late for publica- 

 tion. 



The public is very suspicious, and scientific men 



