— 240 — 
Departures from the daily mean on March 17, 
Di; Hi Z. 
11° | 19^ | 1h | 2^ | 3^ [112/19 | 1^| Qh] ga 11^ | ]9h | In | 9h | gh 
0m —0.'8 | —0.'4 —0:6 0.'4| 1/4 | 33 y| 33 7| 30 | 22 | 11|—928|—37|—36 
5 |—0.8|—0.4|—0.5/0.7/1.5|33 |33 |99|91| 9|—29|—37|—35 
10 |—0.8|—0.4/—0.4/0.8/1.4/34 |33 |29 21 | 8 l—30l—371-—32 
15 | —0.7|—0.4|—0.4 1.0/1.3/34 |33 |99|19| 9|—31|—37|—39 
20 || —0. 6 | —0.5 —0.311.111.3133 |33 |98|18| 7|—32|—37.—31 
25 |—0.4|—0.6|—0.2/1:2/1.3/33 Lag l28|17| 6-32 37-30 
30 |—0.4|—0.6|-—0.111.2|1.3133 |32 |97|15| 5|—33|—37.—99 
35 | —0.4| —0. 6 —0.11.3/1.3|33 |32 |97|15| 5|—34|—37.—98 
40|—0.3|—0.6| 0.111.3/1.3/33 |32 |26|13| 4 |-34—37|—97 
45 |—0.3|—0.7| 0.2.1.3 1.2133 |32 |95|12| ak al ag a 
50 [—0.4|—0.7| 0.21,4 1.2133 |32 |94| 11! 2-36 —37-96 
55 [|—0.4|—0.6| 0.3)1.4/1.2133 |31 |94|11| 2 —37|—36 —93 
60 Li 1 
The D-curve, as usual, perfectly calm, shows, however, a 
striking wave, not exhibited by any of the other quiet curves 
of March. : 
After first contact the eastward course of the curve changes 
to a westward one, till a quarter of an hour before the 
greatest obscuration the eastward course is retaken; this 
wave being very similar to the one shown by the curve 
for May 18 1901, only much larger, notwithstanding the 
distance from the central line was much larger this time. 
The curve teaches that the effect was a deviation to the 
west to an amount of + 1'.0, following the rate of obscuration. 
Horizontal Intensity. 
Looking at the H-curve it seems, that, compared with 
the normal curve, the summit of the curve about noon is 
considerably flattened and spread over nearly one hour and a 
half. The steady ascent of the curve has suffered an inter- 
