U. S. weather bureau Reports of Oct.1870 and 1871 compared. R.M.News. Nov.4,1871 p.l c.4 Plans signal station, Denver. R.M.News. Nov.7,1871 p.l c.4 Established office in FeUerstein BUILDING Denver. R.M.News. Nov.14,1871 p.l c.4 Mercury flirts with zero, Denver. R.M.News. 10v.19,1871 p.l c.3 Observation instruments on top of bldg.Denver. R.M.News. Nov.22,1871 p.l c.5 Reports mercury below zero, Greeley, COLORADO R M News. Nov.30,1871 p.l c.3