CHAPTER XXIV. 



THE TIDES. 



The regularity of the Tides. The influence of the new and full moon on 

 the Tides. There must be one grand cause of the Tides. This is 

 pressure, not attraction. Cause of variation in the Tides by the 

 position of the moon. Formation of the Land. Winds. Lardner*s 

 theory of the Tides. Its fallacy shewn. The earth ought to be 

 approaching the moon. Facts to be remembered. The Plane of the 

 Ecliptic. The effect of pressure on the atmosphere. The Tides 

 caused by pressure in passing the Plane of the Ecliptic. The 

 moon's atmosphere. The Tide in the Mediterranean. The Bay of 

 Fundy Tides seventy feet high. Ram Pasture. Rise of two feet in 

 three miles. The repelling forces control the Tides. 



THE cause of the tides is an interesting subject of enquiry, 

 and yet there are few who attempt to explain ik The periods of 

 the tides are so regular, that they may be determined for months, 

 or even years, before their recurrence ; yet again they are never 

 BO regular that it can be said the -waters will rise to such a 

 point, and no higher. The rise and fall of the tides are the 

 same at scarcely any two places. In the Mediterranean the 

 rise is only about one foot, whereas in the Bay of Fundy, it ie 

 sixty or seventy feet 



When the moon 4s >at the -new and the full, the tides are 

 unusually high. When a -storm also is blowing on the coast 

 from the ocean, -the tide in the harbours exposed to it, i 

 elevated several feet higher than usual. 

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