AMERICAN JOURNAL OF SCIENCE. 
[THIRD SERIES.] 
Art. L.—Contributions to Meteorology: being results derived from 
an examination of the observations of the United States Signal 
Service, and from other sources; by EL1As Loomis, Professor 
of Natural Philosophy in Yale College. Fourteenth paper, 
with Plates I, I, TL. 
[Read before the National Academy of Sciences, New York, Nov. 18, 1880.] 
THE object of this paper is to investigate the course and 
velocity of storm centers in Tropical regions and also in the 
middle latitudes, and hence to deduce the causes which control 
their movemen 
Course and isle of storm centers in Tropical regions, 
In my fifth paper (this Journal, vol. xii, p. 15,) I gave a 
table Mowing the course of those hurricanes which have 
originated near the West India Islands. That table was pre- 
pared in pursuance of a plan to determine the course of storms 
under the greatest variety of cireumstances; and since the table 
exhibited but a small part of the information which I desired 
to obtain, I did not attempt to develop the conclusions which it 
naturally suggested. Soon after the publication of that paper, 
I prepared another table showing the course of hurricanes in 
the India and China Seas; but as this did not furnish all- the 
information that I desired, I have hitherto withheld it from 
publication in expectation of more complete information. The 
system of International Meteorological observations has in part 
supplied the desired ‘information, so that I propose now to 
consider the results already at ttained. oe 
Am. Jour. Scr. i aencigre tes Vou. XXI, No. 121.—Jan., 1881. 
