E.. Loomis— Observations of the U. S. Signal Service. 101 
stated but is supposed to be 1 to 12. Column 9th shows the 
different directions of the winds whose force is given in the 
preceding column. 
[a5 
mowa-s 
Date. | Profs lhe: fach.| 1% |ong "ach, 8+) Wind. Direction. 
1876, 
Aug. 25-26} 1000 29°37 |43°8| 29°29 [57 8 IN.; W.; 8.W.; S.E. 
Oct. 10-11; 1330 | 29°13 |57-0| 29°21 |56°0} 10 |W.S.W.; S.W. 
Oct, 3} 1094 | 28°66 (62-2) 28°74 |68°0| 10 |W.N.W.; S.W.; S.S.W. 
AP 
in & 
se = 
mn 
ts 
sy 
Dec. 2-3! 1031 | 29°13 |54°0| 29°13 [54-0/ 10 |S 5 
canna 6| 1174 | 28°35 |51°8} 28°35 |57°2; 10 |E .E. 
7. 
Jan. 1-2] 1243 | 28°66 |51°8} 28°70-|59°7/ 10 [S.W.; E. 
Jan. 9-10} 1019 | 29°29 |60-2| 29-13 |63°5| 9 |S.W. 
Jan. 19-20} 1190 | 29°06 |53-0| 29:13 (660) 8 |S.W.;S.S.W.;S.; S.S.E.; S.E. 
Feb. 10-11] 1155 | _... |55°5| 29°13 [55°0| 9 |W.; W.S.W.;S.W. 
Oct. 14-15] 1007 | 28-82 |66-0| 29-13 \66°0| 10 |W.N.W.;S.S.W.; 8. 
It will be seen that the number of European cases in which 
storms advance 1000 miles in a day, amounts to 11 in two 
years, being an average of 54 cases annually; the greatest rate 
of progress observed is 1330 miles in a day; these storms 
generally advanced toward a point north of east, and in no 
case was there a considerable movement toward the south of 
and car sometimes attain a velocity greater than has been 
served in Europe, but the amount of the barometric depres- 
sion is much less. In my first paper (this Journ., vol. viii, p. 4 
T alluded to these examples of high velocity, and showed that 
in these cases the rain-area extended eastward of the storm’s 
center to an unusual distance. The same subject was further 
considered in my third paper (this Journ., vol. x, p. 6). 
i now present a summary of the cases in heh barometric 
minima advanced at least 1000 miles in a day, during the period 
for which the observations of the Signal Service have been 
published entire, viz: Sept, 1872, to Jan., 1875, and January 
to March, 1877. In the following table, column Ist gives 
the number of reference; column 2d gives the date of com- 
