TY - JOUR T1 - A Relation of the Great Effects of a New Sort of Burning Speculum Lately Made in Germany: Taken from the Acta Eruditorum of the Month of January Last: Being a Letter from the Inuentor to the Authors of That Journal JF - Philosophical Transactions (1683-1775) VL - 16 SP - 352 EP - 354 PY - 1753/01/01/ UR - http://dx.doi.org/10.1098/rstl.1686.0065 M3 - doi:10.1098/rstl.1686.0065 ER -