Discoveries and inventions of the nineteenth century (1905)
Routledge, Robert · London : G. Routledge and Sons · leaf 504
the nails ; with still longer time, theshadow of the fleshy parts begins to grow faint and the skeleton to appear.With yet more prolonged exposure only the bones will show, in theirvarious degrees of opacity, and the shadows of these will gradually dis-appear as the time of exposure is increased,… … Fig. 233.—Portrait of Professor Helmlioltz. SIGHT. THE investigations of modern science have borne rich fruit, not only byvastly extending our knowledge of the universe of things around us^but also making us acquainted with the mode in which certain agents actupon our bodily organs, and by…
Inventions
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