... Sandwich Islands.--The schooner W. L. Richardson brings Sandwich Island dates to the 14th February. On the 10th of that month, the U. S. steam sloop Wyoming, six guns, under the command of John K. Mitchell , arrived at Honolulu, from Panama, via Hilo and Lahama, in search of the sloop-of-war Levant, supposed to be lost. The Honolulu Advertiser of the 24th, has the following speculation on the subject....