The relation of fishes to ions in their natural environments . ution by the end of a week and selected thehigher concentration in the gradient. lhon after two days in thetap water it was negative to the salt again. (Insert ^rrSBiiJf ) JUL*. A 3iuiil*gr set of experiments waa performed with a small bull heal (o in* long) ^gsA with similar results. The a climatization came sooner however. Neither of the fishes was fed while in the CaOl© Cv and this would have an effeot upon theiap reaction. xkx;c to a a or taindegree. The fact that the rock bass became negative again after beingreturned to the t
The relation of fishes to ions in their natural environments . ution by the end of a week and selected thehigher concentration in the gradient. lhon after two days in thetap water it was negative to the salt again. (Insert ^rrSBiiJf ) JUL*. A 3iuiil*gr set of experiments waa performed with a small bull heal (o in* long) ^gsA with similar results. The a climatization came sooner however. Neither of the fishes was fed while in the CaOl© Cv and this would have an effeot upon theiap reaction. xkx;c to a a or taindegree. The fact that the rock bass became negative again after beingreturned to the tap water indicates that the starvation did not accountfor its positive reaction while being kept in trie OaClp would tend to increase the negativene^s of bull heads tothe salt so i^s positive reaction upon Jam being kept in the CaClr,Gxmi be duo to nothing but acclimatization. The difference in the effectH s^Ai^rvvation upon the reactions of the two species of fishes to calts^^^^ » due to a difference in the metabolism of the fishes and. * -PS-will be discussed In another paper. D. Resistance of Fishes to alts. The toxic effect of certain salts upon organisms has been the subject for considerable investigation unon the part of other workers ( Ringer, Loeb, fcxixxB and others) and therefore considerable is known concerning the relative toxicity of the various salt ions. In the present paper are presented data which indicate that much of the work unon the toxicity of salts must be K5awBXd«x«d reconsidered and correlated with the chemical reaction of the water. The data show that the poisonous properties of a given salt may vary within wide limits depending upon, the amounts of hydrogen or hydroxyl ions present in the solution. 1. Resistance to Ammoni m Salts. According to Mathews (*07) the pharmacological action of most salts is due to the ions of the salt. The kind of ao$io>° depends unon the character of the charge of the ion, whether p
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectfishes, bookyear1915
