JF Ptak Science Books Post 2296 (WWI Photo #82)
Overall, these soldiers look to be in pretty good spirits, even if they were told to be so, they still looked fairly genuine. And who wouldn't be, at least to some degree? They were a few of the millions of soldiers who were wounded in WWI, which means at least that they were among the millions of the dead. [The original iamge is available from the blog's bookstore, here.]
The caption that accompanies these News Photo Service image (made by the Central News Photo Service and dated May 11, 1917, says that they were enjoying the donated headsets--Electrophones--and represented a few of the hundreds that received them. This device was basically a telephone receiver, and years after Bell and Edison dreamed of social integration and advancement and wide-ranging culture, of delivery literature and music to people flung near and far, these soldiers were enjoying the benefit of limited concerts and other entertainments via telephone lines.
Here's a very good quote ont he electrophone from the highly interesting The Cat's Meat Shop, written by Lee Jackson, author of Dirty Old London, the Victorian Campaign Against Filth. (It is an interesting topic--filth and its control--because you really can't have an Industrial Revolution without lots of workers living close to their jobs, which means that lots of people live close together, and you can't have that unless you somehow control for good sanitary conditions, which means you've got to take care of filth.)
"The most picturesque and entertaining adjunct of Telephone London is the electrophone. There is not a leading theatre, concert-room, or music-hall but has the electrophone transmitters - in shape like cigar-boxes - installed before the footlights, out of sight of the audience. They are at the Royal Opera, Covent Garden; and in many of the principal places of worship a wooden dummy Bible in the pulpit bears the preacher's words, by means of the N.T.C. telephone lines, to thousands of invalid or crippled listeners in bed or chair in their homes or hospitals. It was thus that Queen Victoria, seated at Windsor Castle, heard 2,000 school children in Her Majesty's Theatre, in the Haymarket, cheer her and sing "God Save the Queen" on her last birthday. King Edward was likewise relieved from ennui at Buckingham Palace during his illness, for the brightest music, mirth, and song of London were ever on tap at his side. Queen Alexandra is also a devotee of the electrophone, more especially throughout the opera season. On the other hand, the cruel lot of certain hospital patients, of the blind, and even the deaf - for the micro-phonic capacity of the electrophone enables all but the stone-deaf to hear - is thus greatly brightened by science. The sadness of the bedridden, the incurable, or the sufferer from contagious disease is enlivened by sacred or secular song and story, and, as a much-to-be-welcomed addition to the alleviations of London's strenuous life, the benefits of the electrophone are innumerable. It may be added that in the imposingly decorated salon in Gerrard Street from time to time fashionable parties assemble and "taste" the whole of London's entertainments in one evening. Thus, over mammoth aerial and subterranean wire-webs does London, annihilating distance, work and play by the aid of Science.--George R. Sims (ed.), Living London, 1902