CLYDE SEA AREA. 



143 



of a Gradual diminution in the rate of heating as the depth increased until, in the bottom 

 layer of 10 fathoms, the rate was scarcely more than half that in the surface layer, was 

 also shown in Loch Strivan ; and a corresponding increase in the rate of cooling as the 

 depth increased (leaving out of account, in this case, the superficial 10 fathoms). In 



Table LVII. — Average Change of Temperature per diem in Loch Strivan. 



Trip. 



No. of Days. 

 Interval. 



Mass. 



0-10 fms. 



10-20 fms. 



20-30 fms. 



30-40 fms. 



17.6.86 



64 



+ 0-048 



+ 0-051 



+ 0-037 



+ 0-027 



+ 0-028 



7.8.86 



51 



+ 0-085 



+ 0-085 



+ 0-093 



+ 0-082 



+ 0-057 



25.9.86 



49 



+ 0-057 



+ 0-053 



+ 0-065 



+ 0-056 



+ 0-051 



13.11.86 



49 



- 0-032 



-0-083 



-o-ooi 



+ 0-031 



+ 0-062 



23.12.86 



40 



-0-097 



- 0-088 



-0-107 



-0105 



- 0-089 



7.2.87 



46 



-0-068 



- 0-076 



- 0-048 



-0-073 



- 0-086 



20.3.87 



41 



+ 0-005 



+ 0-026 



- 0-024 



- 0-002 



- o-ooo 



6.5.87 



47 



+ 0-034 



+ 0-040 



+ 0-016 



+ 0-008 



+ 0-003 



14.6.87 



39 



+ 0-087 



+ 0-109 



+ 0-077 



+ 0-049 



+ 0-046 



13.8.87 



60 



+ 0-066 



+ 0-090 



+ 0-074 



+ 0-057 



+ 0-037 



28.9.87 



46 



+ 0-019 



- 0-026 



+ 0-029 



+ 0-044 



+ 0-030 



2.12.87 



65 



- 0-058 



- 0-076 



-0-060 



- 0-030 



+ 0-007 



8.1.88 



37 



-0-091 



- 0-088 



- 0-092 



-0-095 



- o-ioo 



27.1.88 



19 



-0-034 



- 0-024 



- 0-032 



-0033 



- 0-037 



11.2.88 



15 



- 0-037 



- 0-040 



-0-043 



-0-053 



-0-064 



27.3.88 



45 



- 0-040 



- 0-042 



- 0-038 



-0-042 



- 0-042 



Mean Hea 



ting . 



+ 0-050 



+ 0-065 



+ 0-056 



+ 0-044 



+ 0-035 



No. of Cas 



es 



8 



7 



7 



8 



9 



Mean Coo 



ling . 



- 0-057 



-0060 



- 0-049 



-0054 



-0-069 



No. of Cas 



es 



8 



9 



9 



8 



6 



Mean Cha 



age . 



0-053 



0062 



0-052 



0-049 



0-049 



the surface layer the rates of heating and cooling were nearly equal, that of heating 

 being 8 per cent, greater, but the rate of heating diminished, and that of cooling 

 increased so rapidly that, at the bottom, cooling was twice as rapid as heating ; the 

 disparity being somewhat greater than in Loch Goil. The bottom curve, in fact (see fig. 

 49, Plate XXXII. ), rose only half as rapidly as the surface curve, but fell at the same rate to 

 a simultaneous minimum. The air curve cut both the surface and the mass temperature 



