1819.] Scientific Intelligence. 151 



similar water known, except the water of the Dead Sea, analyzed 

 by Dr. Marcet some years ago, which contains even a greater 

 proportion of saline contents. 



It may be proper to observe, that there is a little discrepancy 

 in the results obtained, 500 gr. of the water being estimated, from 

 other experiments, to yield, when evaporated to dryness, only 

 111-5 gr. of salts. This difference is probably partly to be 

 referred to the different degrees of desiccation employed, and 

 partly to the smallness of the quantities operated upon, Dr. M. 

 having originally possessed only between 200 and 300 gr. of the 

 water.— (Abstracted from a paper entitled " On the Specific 

 Gravity and Temperature of Sea Waters in different Parts of the 

 Ocean, and in particular Seas, with some Account of their saline 

 Contents," by Alex. Marcet, M.D. F.R.S. &c.) 



XII. Temperature of June. 

 The temperature of the month of June, 1819, was uncommonly 

 low at Glasgow. The oats made very little progress during the 

 whole of the month ; for they were nearly as far advanced at the 

 end of May as in the beginning of July. The only warm days 

 were June 17 and 18, the temperature of which was as follows : 



Thermometer. 



Lowest. Highest. 



June 17 49 71-50 



18 55 70-00 



Mean 52 70-75 



Mean of both 62-375 



During the rest of the month, the thermometer seldom was 

 higher than 60° or 62°, and seldom lower than 50° or 48°. The 

 mean for the month was as follows : 



Lowest. Highest. Mean of both. 



49-27 62-43 55-85 



This is at least 7° below the usual mean of the month of June. 

 The wind veered very much ; but blew nine-tenths of the month 

 from the south-west. 



The barometer was on the whole high; the mean for the 

 month, between the hours of 12 and 2 o'clock, the height of the 

 mercury being reduced to what it would have been supposing 

 its temperature to have been always 32°, was as follows : 



29-7107 inches 



at a height of about 100 feet above the level of the sea. 



The month was rather wet, though not remarkably so. There 

 were five days during which it rained the greatest part of the day; 

 and there were 15 other days upon which showers fell ; so that 

 then, were only 12 days of the month quite free from rain. 



