TY - JOUR T1 - An Account of Some Experiments concerning the Different Refrangibility of Light. By Mr. John Dollond. With a Letter from James Short, M. A. F.R.S. Acad. Reg. Suec. Soc. JF - Philosophical Transactions (1683-1775) VL - 50 SP - 733 EP - 743 PY - 1757/01/01/ UR - http://dx.doi.org/10.1098/rstl.1757.0099 M3 - doi:10.1098/rstl.1757.0099 AU - Dollond, J. AU - Short, J. ER -