PROBABLE MURDER. -- Early on Sunday morning, Mr. JOHN WOOD, a respectable citizen of Rossville about 50 years of age, was found lying in a barnyard , about three miles from home. He had received a severe cut across the temple, and his body was much bruised and mangled. The appearance of his clothes gave evidence that he had gone through with a severe struggle, for they were nearly torn from him, and his pockets had been rifled of their contents. Mr. WOOD left home about 8 o'clock on Saturday evening, to purchase a quantity of eggs, and after having accomplished his errand, started for home, stopping on the way at a house in the neighborhood, which he left about 10 o'clock. A spot on the road near where Mr. WOOD was found, was trampled as if there had been a serious contest, and it is generally supposed that the unfortunate man, although he had but little money on his person, was attacked for the purpose of robbery. Mr. WOOD was a temperate and peaceable man, and was much respected by his neighbors. It is doubtful if he survives his injuries. The authorities of Richmond County are making every exertion to detect the perpetrators of the assault.

STATEN ISLAND RAILROAD. -- The Staten Island Railroad was opened to the public; yesterday, as far as Ettingville, about eight miles from Vanderbilt's Landing. It is expected that it will be completed, in a month, to Tottenville -- sixteen miles -- where it will connect by ferry boat with the trains to Philadelphia, by the Camden and Amboy line. During the Winter, when the Killns are closed by ice, this route will be of practical advantage. Its officers are ALBERT JOURNEAY, Jr., President; CHARLES H. CHANDLER, Secretary; STEPHEN SEGUINE, Treasurer.