Biochemische Untersuchungen des Labyrinthwassers und der Cerebrospinalflüssigkeit der Haifische.

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Abstract
Fluids from Scolioidontus laticandus were studied, p H of the peri-lymph was 7.41; of the endolymph, 7.36; and of the cerebrospinal fluid, 7.23. Specific gravity of the peri-lymph was 1.0200, of the endolymph 1.0204, and of the cerebrospinal fluid 1.0233. Specific conductivity in reciprocal ohms of the perilymph was 17.66 X10-3, of the endolymph 17.53 X10-3, and of the cerebrospinal fluid 18.21 X10-3. [DELTA] of the perilymph was 2.015; of the cerebrospinal fluid 2.016. Total organic, inorganic and separate ash constituents of the 3 fluids are shown in tabular form. Total N of the perilymph was 1.23%, of the endolymph 1.16%, and of the cerebrospinal fluid 1.24%. Uric acid per deci-liter was .072 mgm. for the perilymph, .119 mgm. for the endolymph, and .143 mgm. for the cerebrospinal fluid. Creatine occurred in all 3 fluids, but creatinine did not. Amylase and esterase were present in all 3 fluids; trypsin was present in the perilymph and cerebrospinal fluids. Urease and pepsin were lacking in all 3 fluids.

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