The London Observer states that a new company has been formed in that city for the purpose of laying a submarine cable through the Atlantic, between Europe and America, with an intermediate mid-way station at the Azore islands. This is a very plausible project, but we trust this new company, before contracting for its submarine cable, will wait until the old company makes its second grand effort next month. Senator Evans, of South Carolina, Chairman of the Committee on Patents, expired very suddenly in Washington on the evening of the 7th iast. Mr. Evans was a very highly respectable man, and much esteemed in the Senate. But a few weeks since he reported a Patent Bill published in No. 28. The third new comet of 1858 was discovered at Harvard College Observatory by Horace P. Tuttle, on the 2nd inst., at 10 P. M.