These specimens of Spanish satire came out in the form of cross-readings, a few months after the death of Cervantes; they were affirmed to be by that illustrious author; how truly so I know not.  R.N.

Cannon Clock.—­In the gardens of the Palais Royal and the Luxembourg, at Paris, is a specimen of this contrivance invented by one Rousseau.  A burning-glass is fixed over the vent of a cannon, so that the sun’s rays, at the moment of its passing the meridian, are concentrated by the glass, on the priming, and the piece is fired.  The burning-glass is regulated, for this purpose, every month.

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