THE fact that during the year of 1879 over five hundred thousand dollars were received from ferry passengers between this city and San Francisco, shows the importance of having the lines of travel between the two cities as safe and speedy as possible. The distance from the foot of Market street, San Francisco, to Oakland Point is about seven miles, but the shore on this side of the bay is so flat that it is impossible to run a ferry-boat direct to the shore. Therefore, in 1870 the C. P. R. R. Company constructed what is known as Long Wharf, extending into the bay about two miles. Over this run steam cars connecting with the ferry-boat. But for some time fears have been entertained lest the piles should become rotten and give way. Hence about eighteen months ago the railroad company began to build a mole from the shore about six thousand five hundred and fifty feet. This was filled with rocks and adobe dirt. The work has just been completed and now the company propose to there erect one of the finest union depots on this coast. This building will be two hundred and sixty feet wide and six hundred long, with two wings each nine hundred feet long, into which trains will run, and it will be arranged so that passengers going to San Francisco, who desire to go on the upper deck of the steamer, will go up stairs into waiting rooms and pass onto the upper deck of the boat, which will run close in. There will also be a waiting-room below. The trains will be run into this building and locked in. It is expected that the building will be ready for use in about three months.