660 Transactions. — Geology. 



I will first take the connection between the rainfall and 

 the height of the water in the wells : — 



June, 1894. — May, 1894, closed with heavy rain, and on 

 1st June both wells stood very high ; but, although slight rain 

 continued at intervals until the 10th, both wells had fallen 

 considerably by the 15th. Heavy rain on the 24th made 

 them rise again. 



July, 1894. — During the first week in July the wells again 

 went down ; but the rain on the 8th and 10th, although not 

 heavy, made them overflow and sent them up again to a 

 height perhaps not much less than they had during the first 

 week in May. By the 24th they were down again. It is re- 

 markable that the ram which fell on the 8th and 10th May, 

 although only 0*17in. more than that which fell on the 24th 

 June, should have sent the wells up so much more. Two expla- 

 nations suggest themselves : one is that the rain of the 24th 

 June fell more rapidly and, in consequence, ran mostly off the 

 surface ; the other is that the rain of the 24th June was local, 

 while that of the 8th and 10th July was more widely spread. 

 I have not sufficient data to determine which of these two 

 explanations is the more probable. The rain of the 25th July 

 again raised the wells slightly, but by the end of the month 

 they had both fallen to lower levels than any they had stood at 

 during the two months. 



August, 1894. — The rains of the 2nd and 3rd August again 

 raised the wells,''' but by the 8th they had again fallen. Con- 

 tinuous light rain from the 14th to the 19th raised them once 

 more, but not so high as might have been expected. After 

 this they sank, and before the end of the month had attained 

 the average level. 



September, 1894.— Continuous light rain fell during the 

 whole of the first week. Both wells again overflow^ed, and 

 did not come down to the average level until the 18th. Heavy 

 rain on the 24th and 25th again sent them up, and they con- 

 tinued high until the end of the month. 



October, 1894. — Eaiu on the 1st and 2nd kept the wells 

 up ; but they gradually fell during the rest of the mouth — 

 there being no rain— until at the close they stood lower than 

 they had done before, and the average level of June to October 

 was never again maintained during the rest of the year. 



November, 1894.— In this month the rain was fairly well 

 distributed, and the wells kept at an average which was Sin. 

 below that of June to September, the drop from one to the 

 other taking place during the dry weather in the middle of 

 October. 



* The defect in the record of the deep well at this time is owing to 

 the ram having gone wrong. 



