372 INDEX. 



T. 



Temperature, on the, of the Springs, Wells and Rivers of India and Egypt, and of the Sea and 



Table-lands within the tropics, 125. 

 Temperature of Man, on the, 319. I. Of the variation of temperature during the twenty-four 

 hours, 320. 2. Of the variation of temperature during different seasons of the year, 821. 

 3. Of the effect of active exercise on the temperature, 322. 4. Of the effect of carriage 

 ' exercise, 323. 5. Of the effect of exposure to cold air without exercise, ih'id. 6. Of the 

 effect of excited and sustained attention, ibid. Of the effect of taking food, 324. 

 Thermal Springs, Note on the, of the Peninsula of India, 139. :M 



Tide, Solar greater than Lunar, at Courtown, 121, 



Tides, on the Laws of the, on the Coasts of Ireland, as inferred from an extensive series of ob- 

 servations made in connection with the Ordnance Survey of Ireland, 1. 



Section I. — Account of the stations, levellings, times, and methods of observation, 3. 

 Section II. — Methods of extracting from the observations the times of high and low water; 

 of supplying deficient times and heights ; and of correcting the times first determined, 9. 

 Section III. — Theory of diurnal tide as related to observations only ; and deduction of the 



principal results for diurnal tide given immediately by these observations, 11. 

 Section IV. — Theory of diurnal tide as referred to the actions of the sun and moon, 21. 

 Section V. — Discussion of the height of apparent mean water, as deduced from the heights 

 of high and low water only, corrected for diurnal tide ; with reference to difference of 

 station, and to variations of the magnitude of the tide and the moon's declination, 29. 

 Section VI. — Discussion of the range of tide, and of semimenstrual inequality in height, 

 apparent proportion of solar and lunar effects as shown by heights, and age of tide as 

 shown by heights ; from high waters and from low waters, 33. 

 Section VII. — Establishment of each port, and progress of semidiurnal tide round the 



island, 38. 

 Section VIII. — Semimenstrual inequality in time ; proportion of solar and lunar effects as 

 shown by times, and apparent age of tide as shown by times ; from high water and from 

 low water, 41. 

 Section IX. — Formation of the time of diurnal high water ; progress of the diurnal tide- 

 wave round the island ; comparison of its progress and range with those of the semidi- 

 urnal tide, 44. 

 Secti9n X. — Method of expressing the height of the water, throughout every individual 

 tide, by sines and cosines of arcs ; and expressions in this form for every tide in the 

 whole series of observations, except those at Courtown, 47. 

 Section XL— Discussion of the height of mean water deduced from the analysis of indivi- 

 dual tides ; with reference to difference of station, and to variations of the phase of the 

 moon, and of the declination of the moon, 96. 

 Section XII. — Discussion of range of tide, or coefficient of first arc in the analysis of indi- 

 vidual tides ; and of semimenstrual inequality in range, apparent proportion of solar and 

 lunar effects, and age of tide as deduced from range, 103. 

 Section XIII. — Establishment of each port, as deduced from the time of maximum of the 



first periodical term in the analysis of individual tides, 107. 

 Section XIV. — Semimenstrual inequahty in time, proportion of solar and lunar effects from 

 times, and apparent age of tide as shown by times ; deduced from the time of maximum 

 of the first periodical term in the analysis of individual tides, 108. 



