iv PREFACE 



thr precise and technical treatment that would be more suited to 

 his rrquirrnu'nts. 



No originality is claimed for the greater part of the subject 

 matter, most of which is common knowledge and has previously 

 apjx>ared in publications of the writer and others in the reports of 

 the U. S. Geological Survey, especially in "Underground waters 

 for Farm Use" (Water-supply Paper 255) from which the greater 

 part of the illustrations and considerable portions of the text have 

 Uvn extracted-. "Well Drilling Methods" (Water-supply Paper 

 2 57) by Isaiah Bowman, has also been drawn upon for many of 

 the statements concerning drilling methods. 



The writer ventures to hope that the discussion of the ground 

 waters, which is based on an experience of some years in charge of 

 the underground water investigations in the eastern United States 

 for the U. S. Geological Survey and on field examinations in more 

 than twenty-five different states, will serve to remove some of the 

 obscurity and mystery which surrounds them in the minds of 

 many agriculturalists, and will lead to a clearer understanding of 

 the principles involved in securing and protecting farm water 

 supplies. 



MYRON L. FULLER. 

 157 SPRING ST., 

 BROCKTON, MASS. 



