29 
From a series of observations, (affected by the observed 
temperature of the water) made by himself in the Medi- 
terranean, the Author concluded — 
That, from the gut of Gibraltar the specific gravity of the 
water decreases towards the area lying between Sicily and 
the Morea. 
From Cape Malea the specific gravity increases as one 
proceeds up the Archipelago, the influence of the current 
from the Black Sea being hardly felt at all to the south of 
Tenedos. 
The creeks and bays of the Greek Islands give water of 
very high specific gravity, such gravity increasing with the 
distance from open water and being independent of depth. 
In the Mediterranean, water taken from a point 16 feet 
below the surface always, except in one instance, gave higher 
hydrometric readings than surface water, and the temperature 
of water drawn from the lower station Avas generally higher 
than that at the surface. In the Atlantic no difference in 
specific gravity Avas observed in water taken from the surface 
and the loAver station. 
Mr. Baxendell, F.R.A.S., mentioned the folloAving 
observations made by himself and Mr. Richard Dale, on 
October 24th, 1862, at Mr. Worthington’s Observatory: — 
The night was remarkably clear ; there was no moon, nor 
any decided indication of aurora in the north ; but there Avas 
so much light in the atmosphere that the country around 
could be distinctly seen, and houses and hedgeroAvs at a 
distance clearly perceived. This apparent luminosity of the 
atmosphere continued for two hours, and the night then 
became very dark, but still remained very clear. Mr. 
Baxendell afterwards noticed that objects at a distance Avere 
seen much more distinctly on this occasion than when the 
moon Avas seven days old. 
