HALF-HOURLY BAROMETRICAL OBSERVATIONS-for seven days, from May 10, 1857, to May 16, inclusive. The numbers marked thus are the maximums and the minimums of the day. Amplitude. No. 2 b. Half-hourly barometrical observations, made to find out the amount of amplitude and the precise hour at which the maximums and minimums take place, during daytime, between 9 a. m. and 5 p. m. .060 .957 59 *.956 59 .079 950 62 *.948 61 .948 60 .072 .952 62 .950 61 .952 61 .074 .960 62 .958 61 .960 61 .068 The numbers marked thus are the maximums and minimums of the day. |