y} oc. Eim. r Vol. XXXVIII 



PLATE XXIII 



TEMPERATURE CURVES 



Fig. 4 CHANNEL— TYPICAL CURVES. 



41 42 43 44 45 46 47 50 51 52 53 54 55 56 



V 



Fig. 5 MINCH AND NORTH ATLANTIC TYPES. 



16 4 86 





(I 



8*12 87 I2 6-6G 



Ft? 



87 



Fms 



46 47 48 49 50 51 52 53 54 55 56 S7 











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£ 6 CHANNEL— SEASONAL VARIATION OF TEMPERATURE OF MASS OF WATER, AND AIR AT MULL OF CANTYRE LIGHTHOUSE. 



Temp. 60' 



1887. 

 MAR. APR MAY JUN JUL AUG. SEP OCT. NOV DEC. JAN FEB MAR. APR. MAY JUN JUL AUG. SEP OCT NOV DEC. JAN. FEB. MAR. APR. MAY 





































































































































































































































































































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60 Tern p. 

 58 

 56 

 5+ 

 52 

 50 

 48 

 46 

 44 

 42 

 40 

 38 

 •10 



-•05 

 10 



Curve of Rate of Change of Water Temperature in degrees per day (averages per month) 



Fig. 7 PLATEAU, WEST.— TYPICAL CURVES. 



J 41 42 43 44 45_ 55 46 47 48 43 



Positive Slope, 



Heating 



N93. 



Homothermic Curve, Negative Slope. Homothermic Curve, 



Maximum, Cooling. Minimum, 



N°23. N?I0 N°32 



Fms 

 5 



Fig 8 PLATEAU, CONTORTED VERTICAL CURVES. 



B artholomew. Edin? 



