A mother and two daughters, named Harvey, have just been committed to Dorset gaol, for the murder of an infant belonging to one of the latter. Both the daughters were pregnant, and had mutually agreed to destroy each other's child; but the second crime has fortunately been frustrated by the discovery of the first.—Sarah Higley, a girl who resided with her father and mother, labouring people at Oldfield-common, Worcestershire, was also committed for trial on the 7th inst. for the murder of her new-born infant, and her mother and father as accessories before the fact.