title: STIMULATION BY THE MINERAL ACIDS, HYDROCHLORIC, SULFURIC, AND NITRIC, IN THE SUNFISH EUPOMOTIS.
abstract: 1. The stimulating efficiency of hydrochloric, sulfuric, and nitric acids has been measured in the sunfish Eupomotis gibbosus, by a method which reduces experimental errors to a minimum. 2. The results show that stimulation by these acids is primarily dependent upon the (H(+)) produced in the animal's aquatic environment, and that the reaction time is a logarithmic function of the (H(+)) within the range tested expressed by the equation: (RT-5) = -4.3 log (H(+) x 10(4)) + 9.118. 3. Any effect of the chloride, sulfate, and nitrate ions must itself be measured by the (H(+)). 4. Variation in the reaction time is also a logarithmic function of the (H(+)), and the percentage variation is independent of the (H(+)) over the range tested. 5. Freshly collected fish show a lower threshold for stimulation as determined by the (H(+)) than do fish adapted to laboratory conditions, but relatively the reaction times of the two groups are the same.
authors.affiliation: Department of Physiology and Biochemistry, Rutgers University, New Brunswick.
authors.forename: W H
authors.initials: WH
authors.lastname: Cole
authors.forename: J B
authors.initials: JB
authors.lastname: Allison