xtension of Patents. without driving the hand and arm at such a rate It is claimed that this cooler will save fr¢m thirty- that the operator is soon tired out; moreover one three to fifty per cent of ice,as it was in use last season, hand is always occupied in moving the machine so while the cost… … INVENTORS, MANUFACTURFRS. of the spectrum of a Orionis accompanied the communi- cation. The spectrum of Sirius is decribed by the before the expiration of the patent, which gives time The SCIENTIFIC AMERICAN is the largest and most widely learned author as resembling tiat of sulphur. for the…
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