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NEW YORK STATE MUSEUM 



soldered on. The space between the copper bottom and the end 

 of the cylinder was fitted with a false bottom, after which a plank 

 bottom was put on and securely fastened by means of angle iron. 

 The drain gage was then lowered to position by means of an in- 

 clined plane and a windlass. After connecting drain pipe with 

 drain gage pit, it was inserted and soldered to place. 



The apparatus for supplying water to these gages is quite dif- 

 ferent from the usual form. When there is percolation from the 

 drain gage, the water percolated flows out through a drain cock 

 and is collected in a bottle beneath it. On the other hand, if the 

 soil of the drain gage absorbs some of the bottom water, the level 

 of the latter falls, permitting a bubble of air to enter, which passes 

 upward and is conducted into the upper part of a reservoir out- 

 side the gage. This allows an equal quantity of water to pass out 

 of the reservoir into the drainage tube. 



Table No. 35, New Drain Gage Record, June to December, Inclu- 

 sive, 1889, from the Report of the Agricultural Experiment Sta- 

 tion for 1890, gives some of the particulars of the workings of these 

 new drain gages. 



These new drain gages were not satisfactory and the record was 

 discontinued after December, 1899. 



The hight of water in wells. The hight of water in wells is 

 related to evaporation, and in order to show some of the phe- 

 nomena connected with the movements of ground water, a series 

 of measurements were made during 1887-1889, inclusive, of the 

 hight of water in an abandoned well at the Geneva Agricultural 

 Experiment Station. The well- is forty feet deep and situated 

 near the top of a ridge of such a hight that in three directions it 

 is necessary to go only a few hundred feet before reaching land 

 lower than the bottom of the well, while in the fourth direction 

 there is a railroad cut, the bottom of which is but slightly above 

 that of the well. 



The measurements began December 1, 1886, and were continued 

 daily until the end of 1889. In table No. 36, Hight of Ground 

 Water in an Abandoned Well at the Geneva Agricultural Experi- 

 ment Station from December, 1886, to December, 1889, Inclusive, 



