Rensselaer Semi-Weekly Republican, Volume 35, Number 121, Rensselaer, Jasper County, 2 October 1903 — The Height of Clouds. [ARTICLE]

The Height of Clouds.

- To determine the height of clouds an observer at bach of two stations a mile or more apart measures the angle and altltudb of some point of a cloud, the identity of which is ascertained from conversation by telephone, while synchronism in the observation is secured by the beating of electric pendulums. This Is the method used at the celebrated observatories at Upsala, in Sweden. * - •*