The object of most interest

Baxter Hathaway & John Moore, The exposition of ideas, Boston, Heath and Company, 1948, p. 22.

There are many furrows in the sand where some creature has traveled about and doubled on its tracks ; and, for wrecks, it is strewn withy the cases of caddis worms made of minute grains of white quartz. Perhaps these have creased it, for you find some of their cases in the furrows, though they are deep and broad for them to make. But the ice itself is the object of most interest, though you must improve the earliest opportunity to study it. If you examine it closely the morning after it freezes..