le change during this century. The superiority of spec- “ There éxist in nature intermittent springs, the water flow- be replaced: with sufictent rapidity till its level rises above ing regularly for a time, and then suddenly ceasing. In‘these the bend in the syphon, the syphon will again commence… … ing an intermittent supply, with any form of chan- receiving any ink by the interposition of nel, or a remittent supply, in connection with a moisture. syphon channel. In order that the syphon may work, we In transferring from paper, the ink and paper must be must also suppose the air to have free…
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