46 



Composition of the Atmosphere 



sively to the question of the Dalton hypothesis, nevertheless they are 

 extremely interesting as showing careful attention to a very important 

 problem. 



Table 27. Determinations made by Smith of oxygen in the air from mountainous districts 



of Scotland. 



Place. 



Ben Nevis 



Do 



Do 



Do 



Do 



Lochin-y-gair (Balmoral) 



Do 



Ben Ledi 



Do 



Do 



Ben Voirlich 



Do 



Ben-na-bourd 



Ben Lomond 



Summit. Base. 



p. ct. 

 20.91 

 20.96 

 20.94 

 20.88 

 21.01 

 20.94 

 20.95 

 20.98 

 20.97 

 20.97 

 21.01 



21.03 

 20.94 



p. ct. 



20.93 

 20.91 

 20.89 



20.80 



21 



21.02 



20.87 

 20.88 

 21.18 

 20.95 



Place. 



Ben Lomond . . 



Do 



Ben Muich Dhu 



Do 



Do :-.-.- 



Do 



Do 



Do 



Ochill Hill 



Do 



Moncrieffe Hill . 



Average . , 



Summit. Base 



p. ct. 

 21.08 

 20.91 

 21.00 

 21.07 

 21.02 

 20.99 

 20.93 

 21.01 

 21.05 

 21.07 

 20.93 



20.98 



p. ct 



20.94 



For comparison, Smith analyzed a large number of samples of air 

 from districts in Scotland with but slight, if any, elevation. (See table 

 28.) Of particular significance is the extremely low value found near 

 Inverness, which Smith attributes to some impurity arising from the 

 water. 



Table 28. Determinations made by Smith of oxygen in air from districts not mountainous. 



Place. 



Shore at Lossiemouth . . . 



Do 



Inverness, at Moray Frith 



Do 



Do 



Inverness, behind the 



town 1 



Sea-shore, Oban 



Edinburgh, Prince's street 



Do 



Edinburgh, Calton Hill. . 

 Aboyne 



Do 



Do 



Aberdeen, sea-shore 2 



Do 



Do 



Place. 



Errol, marshy ground 3 



Do 



Caledonian Canal (near 



Inverness) 4 



Balmoral 



Do 



Taynuilt (near Oban) . . 



Do 



Braemar-on-the-Dee 5 . . 



Huntly 



Mar Forest 6 



Do 



Do 



Do 



Forest near Braemar . . 



Total average . . . 



1 Very clear weather. 



2 Wind from sea, N. : evening. 



3 Windy and cloudy. 



4 Cloudy and windy, SW. 



5 Cloudy. 



6 Rain and sunshine. 



Although unquestionably slightly affected by the carbon dioxide in 

 the exhalations of the inhabitants and in the production of furnaces and 

 stoves in Perth, the results of Smith's analyses of air collected from a 



