Bulletin . he positive reaction of an individual orange-spotted sunfish toa saturated solution of naphthalene. Fishes are generally positive to this deadlysubstance. Graph 44 shows the reaction of an adult rock bass to a mixture of pure water3 parts and water saturated with xylene 1 part. The fish was decidedly positive andwas soon intoxicated. Graph 45 shows the reaction of a minnow (Notropis) to water containing ap-proximately cc. per liter of toluene. The fish is decidedly positive, though thisconcentration would kill it in less than an hour. Graph 46 shows the reaction of two orange-s
Bulletin . he positive reaction of an individual orange-spotted sunfish toa saturated solution of naphthalene. Fishes are generally positive to this deadlysubstance. Graph 44 shows the reaction of an adult rock bass to a mixture of pure water3 parts and water saturated with xylene 1 part. The fish was decidedly positive andwas soon intoxicated. Graph 45 shows the reaction of a minnow (Notropis) to water containing ap-proximately cc. per liter of toluene. The fish is decidedly positive, though thisconcentration would kill it in less than an hour. Graph 46 shows the reaction of two orange-spotted sunfishes to cc. of ben-zene per liter—sufficient to kill them in an hour. In this experiment the fishesavoided the pure water and finally came to rest in the center. Graph 47 shows the reaction of a orange-spotted sunfish and a rock bass to aslightly weaker concentration of benzene than was used in the case of graph 46. Inthis case the fishes both finally avoided the polluted water. Chart Chart V. Graph 48 shows the positive reaction of an orange-spotted sunfish to ee. ofamylene. Eeactions to this drug arc usually positive. Graph 49 shows the positive reaction of two minnows (Notropis) to amylenein which they appear to have selected an optimum concentration, near the center. Graph 50 shows the reaction of a largc-mouthod black Vjass to water cc. of ethylene per liter. It is clearly positive, though this concentration wouldkill the fish in less than an hour. Graph .51 shows the reaction of a minnow (Notropis) to water containing aboutten cc. per liter of acetylene. The reaction is clearly positive though the gas is notfatal. Graph 52 shows the reaction of an orange-spotted sunfish to about ten cc. ofacetylene per liter; the reaction is clearly positive. Graph 53 shows the i-caction of three orange-spotted sunfishes to a mixture ofcarbon monoxide ( cc. per liter) and ethylene ( cc. of ethylene). Graph 54 shows the reaction- of two suc
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Keywords: ., booka, bookcentury1900, bookdecade1910, booksubjectnaturalhistory
