Considering the height of the wall , and this in artificially placed earth , it could be but an experimental structure , inasmuch as it woud be about twice the height of any heretofore built . The third objection , the double means afforded the water to reach the core wall , this is another serious ob- jection , as the water by starting at the end of the em- bankment in the reservoir and following between the face of the stone dam and the embankment would inevitably reach the core wall . It would be impossible to puddle or other- wise compact the embankment against the dam to pre- vent this , as settlement would surely follow in any em- bankment of this great height . This objectionable feature here exists because of the combination of a stone dam and an embankment , while it could not exist in either a continuous stone dam or , on the other hand , a continu- ous embankment and core wall . As to the second chan- nel by which the water could reach the wall there is also little doubt , for it would be afforded freer access through the refilled material of the great pit , than it would have STONE DAM البلد TOP OF 290 - FEET_ . CORE WALL MARCH 1ST 1901 EMOVED DISINTEGRATED FLIMESTONE SHATTERED LIME STONE THE NEW CROTON DAM LONGITUDINAL SECTION ON AXIS OF DAM , SHOWING CORE WALL REMOVED AND ITS DEFECTIVE LIME STONE FOUNDATION , WHICH HAS BEEN EXCAVATED FOR THE EXTENSION OF THE DAM . AK GATE HOUSE . CHAMBERS TO BE REMODELED AND REINFORCED in ordinary cases , where the wall below the original sur- face of the ground is in a narrow trench and protected by original soil . It would be useless to consider any proposi- tion to increase the width of the embankment , because the means afforded the water to reach the core wall along the face of the dam would always remain ; this is a most dan- gerous feature , as the core wall would not have sufficient weight or strength to resist the pressure of the water that would come against it .