Note 89 — Chapter IX · WONDERFUL SEAL ISLANDS.

The rise and fall of tide at the Seal Islands I carefully watched one whole season at St. Paul. The irregularity, however, of ebb and flow is the most prominent feature of the matter. The highest rise in the spring-tides was a trifle over four feet, while that of the neap-tides not much over two. Owing to the nature of the case, it is impossible to prepare a tidal calendar for Alaska, above the Aleutian Islands, which will even faintly foreshadow a correct registration in advance.