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tility of tlie land, for the greater part of the year it was a 

 piaiii nuisance upon the clay soil of the hospital hillside. 



The next step involved the purchase of a field about one 

 mile distant, upon the surface of which the sewage was 

 poured for about five years. 



The soil being of a light gravelly sort it answered the 

 purpose for a time, at least the sewage was out of sight. 



Recently the owners of adjoining property have com- 

 plained of the injury done their land by the volume of wa- 

 ter which flows over their borders and it seems necessary 

 to make a radical change. If the town and cities lying be- 

 tween the ocean and this hospital would combine with us to 

 build a trunk sewer to deep water, our share of the expense 

 might be considered well invested. But as there is no prob- 

 ability that a trunk sewer will be built through this section 

 of Essex Count}^ steps will be taken to dispose of our sew- 

 age on a piece of new land through a process of sub-sur- 

 face irrigation. 



Fifteen acres of rough pasture land have been cleared of 

 trees, brush and stones. Through this land three lines of 

 10 inch drain tile surrounded with beds of stones have 

 been laid 5 feet below the surface. The whole held event- 

 ually, one-half immediately, will be filled with blind ditches 

 about 15 feet apart. These ditches will be dug 4 feet deep 

 and 2 feet wide. An open space 8X8 inches at the bottom 

 will be formed by stone with small stone piled above. Earth 

 will be filled in for the upper 18 inches. 



There will be from 5 to 7 miles of such ditches in all. 

 The ditches will be built in plots, no two ditches connect- 

 ing except by a tight jointed pipe at the top level of stones. 



Sewage will be received into and distributed from a tank 

 at the highest point of the field. Seventeen lines of 4 inch 

 pipe radiating to all parts of the field leave this tank at the 

 same level thus insuring the distribution of the liquid 

 evenly throughout the field. 



Each radiating line terminates in its individual plot emp- 

 tying into the blind ditch on the highest level in the plot* 



