OBITUARY. JOHN W. STILES. Col. John W. Stiles died at his home, at No. 281 Fourth-avenue, at 9 o'clock yesterday morning, at the age of 70 years. He had been ill for some time with a disease of the heart. Pre- vious to 1861 Col. Stiles had been engaged in the ship chandlery business with Marshall O. Roberts on West-street, and in the same busi- ness alone at Coenties-slip and South-street. He left New-York on May 27, 1861, for the seat of war as Colonel of the Ninth New-York Regi- ment of Volunteers. He was in the second battle of Bull Run, but owing to illness was compelled to resign his command in January, 1863. Since then he had been engaged in inventions, princi- pally those pertaining to steam gauges. He re- ceived the first medal for steam gauges at the American Institute Fair last year. Col. Stiles had been a widower for many years. He leaves one daughter, Mrs. Horace J. Fairchild, wife of the foreign partner of the firm of H.B. Claflin & Co. The funeral will be held at the house of Col. Stiles's sister, Mrs. Phelps, at No. 49 East Twenty-third-street, on Friday morning, at 11 o'clock.