18 E.S. Snell on a Rainbow caused by reflected Light. 
which serves to show the extent and general entireness of the 
vortical rotation in the gale. 
It would be an error to suppose that the gales and hurricanes 
which have been traced on our storm charts, were but exceptional 
cases of cyclonic action and progression in the winds of our globe. 
For there is a constant succession of rotary movements, greatly 
variant in their activity and their visible effects, and to which I 
shall further allude, It is the more violent cyclones, however, 
that afford us complete evidence of their geographic routes and 
their continued movement of rotation. 
Of this active class, designated as hurricanes, gales, and storms, 
it is believed that the tracks or routes of several hundred might 
be added to our storm maps, by carefully collating the records 
which already exist. It is certain that a large number might be 
traced from the records and notices now in my possession or oth- 
erwise at hand; of which, the case I have now presented is but 
a single example. But the storms noticed in the succeeding por- 
tions of this article are selected in reference to their peculiar local- 
equal latitudes around the globe, rather than for the amount of 
information possessed, regarding their extent and progression. 
(To be continued.) 


Art. I].—Account of a Rainbow caused by Light reflected from 
Water ; by Prof. E. 8. Syetu, of Amherst College. 
I nave received from my friend and former pupil, Mr. H. M. 
Adams, of the Theological Seminary in East Windsor, Conn., 4 
very interesting description of a brilliant rainbow scene, witnessed 
y hi and others, on the 24th of Sept. last. After a slight 
shower, the sun shone out, about 5 p. m., and produced the usual 
primary and secondary bows, except that they were of uncommon 
brightness. Four or five supernumeraries, exceedingly vivid and 
beautiful, underlined the upper part of the primary, the usual at- 
tendant of a very brilliant rainbow. In addition to these, there 
was seen an excentric bow, quite as luminous as the secondary, 
but in angular size and order of colors, just like the primary, ane 
* While the printing of these pages was in, progress I received from the gover™ 
ment of Denmark, through Consul Bech, observations made at Oefjord, on Skage 
i ele 0 e W.. which show 
? 
h “7 p.m. Sep 
10th, under an east wind, the force of which is marked 2. The fall of the barometer 
; rwards changed to S. W., its force being 
normal effect of the cyclone at Oefjord, a position which is remark- 
ered clonic winds, by the peculiar outline and the 
elevations of Iceland, is deserving of notice; not taking into account the 
the abatement of which appears to occur in the left 
quadrants of the gales in this highly northern portion of the Atlantic. 
