her advantages in illumina- raft of sufficient size could be got together for towing. tion. There would be with such a lens some outstand- They were well known to the ancients, who found How to protect timbers from their insidious foes ing chromatic aberration, the violet image being rather has… … In Southern California a considerable quantity of CROSS-SECTION OF PILING, SHOWING 800 TEREDO eucalyptus piling is used. This wood withstands the HOLES, NO TWO HOLES BREAKING INTO ONE TEREDO AND CALCAREOUS LINING OF TUBE. action of the teredo for from three to seven years, ANOTHER. but the growth…
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