"Ha-ha-ha-ha " A regular ringing, hearty, merry laugh-just such an outburst of mirth as a strong, healthy boy of sixteen, in the full, bright, happy time of youth, and without a trouble on his mind, can give vent to when he sees something that thoroughly tickles his fancy. Just at the same time the heavy London clouds which had been hanging all the morning over the Park opened a little to show the blue sky, and a broad ray of sunshine struck in through...