Show the wealth ot cubs cuba is a rich country on this island there are COCCO sugar and tobacco plantations and fruit and vegetable farms the total value of which is cubas yearly exports amount to while the imports are only of the latter is from this country nearly goes annually to the of spain swifter than electricity while the principle of seeing by electricity at a distance says prof A graham bell 13 the same as that applied in the telephone yet it will be very much more difficult to construct such an apparatus owing to the immensely greater rapidity with which the vibrations of light take place when compared with the vibrations of sound it is merely a question however of findings a diaphragm which will be sufficiently sensitive to receive these vibrations and produce the corre tn dinEr variations |