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spec: Abstract : Groundwater recharge is one of the most difficult components of the water balance to measure . Dr. Loehr 's testimony shows that he found severe traumatic conditions on the left side of appellant 's head ; that his eye was black , and there was a large area turning black back of his left ear ; that the next morning it was almost impossible for appellant to get his mouth open ; " appeared just like there had been a hard blow against the mastoid , or solid bone-no bad cuts , just bruises .