HEALTH OF THE BOSTON FARM SCHOOL.--The following remarkable statement respecting the health and the mortality of the boys connected with the Farm School, on Thompson’s Island, in Boston harbor, is made on the authority of Robert Morrison, Esq., the Superintendent. The number of boys in the school, June 1, 1851, was 85; January 1, 1850, 89; January 1, 1851, 97. The present number is 94, several having been recently sent to places in the country. No death has occurred on the island since August, 1845; which is the only time when a physician has been sent for on account of sickness among the boys, for nearly ten years! Under Providence, we consider this, in some measure, owing to a healthy location, a simple but wholesome diet, exercise in the open air, and good ventilation. The average number of boys in the school, for several years, has not been far from 80. BOSTON PAUPERISM.--The Annual Report of the Boston Society for the Prevention of Pauperism, estimates the cost of pauperism to that city, in 1840, at $43,454; in 1845, $45,000; and in 1850, $111,905! It also states that in the past five years, the native American paupers have decreased about 37 per cent., while foreign paupers, supported by the city, have increased about 150 per cent. MAINE STATE PRISON.--When the State of Maine was about to erect a new Penitentiary a few years ago, the commissioners were disposed to recommend the separate system as decidedly preferable on every ground, except that it costs more at first, and may not yield so large a profit on convict labor. By the last report of the commissioners, we observe that of the whole number of convicts, (eighty-four,) about one-half are employed in making shoes--a business quite as profitably pursued in seclusion as in association. Basket-making furnishes employment to such as, from age or infirmity, are unable to perform hard labor, and this also might be as well done in a cell. As to the finances of the institution, a special committee of the legislature, appointed to investigate its affairs says, “they cannot give any definite information,” but they portentously intimate, (what time will probably reveal,) that if revenue is a prominent object in the management of the prison, it will be defeated. “For any losses which may accrue to the State,” say the commissioners, “we attach no blame to any former warden or officer of the prison, for any neglect or want of care, but believe, the loss arises from the universal credit system which has been too prevalent in our State.” “We certainly hope so,” says a leading newspaper, “for it is high time the State were realizing more from the prison economy than it has yet done.”