426 E. W. Morley— Cause of the Variations 
barometer was central over Chesapeake Bay, and the winds 
blowing toward the northwest from the Appalachian snes 
tains seemed not to blow over them from the east. The ox 
gen now found was 0°20960, which was a fall of 0:00012 feo 
the precedin 
The dahciensy of oxygen on the 8th I cannot explain satis- 
factorily. 
On December 14th there was a high baronet off the coast 
of Florida. As often happens, the Appalachians seemed to act as 
a barrier. The winds blowing from them toward the northwest 
had nothing to do with the winds to the east of the mountains. 
If we may “thence infer a descent of upper currents in this re- 
gion, we shall account for the fall in the amount of oxygen, 
which amounted to 0-00010. 
The deficiency in oxygen noticed the next day is easily tad 
plained according to the working Sem suggested, 
does not add to the evidence for it. e same is true of “i 
deficiency observed on the 19th. 
On December 23d, a very wide area of high pressure with 
winds diverging from the area affords a reasonable presump- 
tion that these winds were reinforced by a descent of upper 
currents. The oxygen found was 0:20953, a fall of 000006, 
which is too small for safe deduction. On the 24th and 25th 
the center of high pressure was nearly passe over the lower 
t. Lawrence. The directions of the winds are rather confused, 
but distinctly exhibit the tendency according to which winds 
radiating from a common center of high pressure are likely to 
be accompanied by a deticiency of oxygen. The oxygen found 
was 0°20951 and 0:20945 respectively on the two da 
The rapid fall in the amount of oxygen on the 28th affords 
no —— for or against the theory. 
he deficiency of oxygen on December 31st and January 
1st was probably due to the occurrence of an area of high 
pressure over the Appalachian Mountains on each of those days. 
From each side of this area winds were blowing outward. The 
amount of oxygen on the 31st was 0-20951; on the Ist it was 
0-20944 in the morning, and 0°20988 in the evening. From 
the weather map of the 2d, according to my theory it would 
be expected that there would be a deficiency of oxygen; but 
while the evening observation showed a slight deficiency, the 
ware observation showed none. 
map for the 22d gives reports from but a few stations, 
so thet the data are too few for trustworthy inference. As far 
as the facts go, they seem little conformed to the theory. 
January 25th.—At this date there was an area of high press- 
ure over Mississippi. Winds were spreading outward in all 
directions around this area, the oxygen found was 0°20949, 
