72 American Fisheries Society. 



Mr. Tayu)r : Anybody can use it who wants it ; it is perfectly free. 



Mr. Titcomb: It is merely a matter of giving the formula? 



Mr. Taylor: Yes. We are making it now ourselves in order to 

 encourage the trial of it. Of course, we do not expect to continue that; it 

 is merely for experimental purposes. We give it to people who show a 

 willingness to try it out and to keep us informed of the results. 



Mr. J. N. Cobb : Have you worked out any estimate of the cost of this 

 material as compared with the others? 



Mr. Taylor : The cost depends to a considerable extent on the solvent. 

 There are several substitutes for gasoline at our disposal ; kerosene can 

 be used, but it takes longer to dry and leaves the line more oily. Carbon 

 tetrachloride would be ideal, because it is non-inflammable, but it costs four 

 times as much as gasoline. Anybody can use carbon tetrachloride who wants 

 to, but I do not think many people will want to pay $1.30 a gallon for it. 



Mr. J. N. Cobb : You say copper oleate is not inflammable? 



Mr. Taylor : No ; but when you dissolve it in gasoline of course it is 

 highly inflammable until the nets dry out. 



Mr. J. N. Cobb : That, of course, is the principal trouble with the tar 

 preparations ; there is apt to be spontaneous combustion at any time if you 

 get the sun shining on it in a room. We have had that several times. 



Mr. a. L. MilLETT, Boston, Mass. : What is the ratio or proportion of in- 

 creased life by this method as against increased cost? 



Mr. Taylor : So much depends on the nature of the service the line is 

 expected to perform. All our experiments have been in connection with 

 continuous exposure imder the water, allowing the lines to rot. That does 

 not happen in actual service ; it goes in and out. 



Mr. Millett: You claim that lines treated by this method last twice 

 as long, do you not? Naturally the life would be twice as long in any event. 



Mr. Taylor : I think that is about the right estimate. It is a question 

 of labor more than anything else. 



Mr. Millett : Would the longer life actually mean a lower cost? 



Mr. Taylor: I have not exact figures on that, but I can give you a 

 guess unhesitatingly that it would. 



Mr. Millett: You said that in your test it took those that v/ere painted 

 with the ordinary copper paint, such as is used on a ship's bottom, forty- 

 eight hours to dry. Why did it take so long, when it will dry on a brush? 



Mr. Taylor : The copper paint used in net preserving is not the same. 

 It has the sam.e active ingredients, but the binder is different. We know 

 it takes forty-eight hours to dry; it is recommended, however, that the 

 painted line be put immediately in water without drying. 



Mr. C. F. Culler, Homer, Minn.: What is the temperature of the 

 water in which you make these experiments? 



Mk. Taylor: The water at Key West is about 80. At Beaufort, about 

 the middle of February, as I recall, the water was about 45 or 50 ; in August, 

 about 80. 



Mr. Culler: We use a number of seines, and the temperature of the 

 water in summer time ranges as high as 96 to 100. Do you know whether 



