930 



SCIENCE 



[N. S. Vol. XXXIX. No. 1017 



Fig. 1. E.-W. Dotted curve, observed values; full curve, 0.7 of calculated. 



was very great. As the experiment progressed was found necessary, for example, to take ac- 



and the order of accuracy in the observations count of the fact that the tidal force of the 



was seen to be high, it became necessary to moon is greater on the side of the earth next 



increase the rigor of the computations. It to the moon than on the opposite side. This 



