86 American Fisheries Society 



paint very thoroughly. For fabrics, however, fish oil 

 must be heated to a temperature of over 200° C, and if 

 air is injected at such a temperature the glycerides are 

 expelled and thick oil is producd which, in conjunction 

 with the drier just named, is equally good for printing 

 inks. It is advisable, however, to add at least 25 per cent, 

 of either a heavy bodied linseed oil or a raw linseed oil 

 which does not break before the manipulation just re- 

 ferred to has begun." 



"Since last year some of the enamel leather and print- 

 ing ink manufacturers have adopted the use of fish oil 

 as a medium to replace linseed oil, with excellent results, 

 and the enamel leather which is produced, while not so 

 high in gloss as that made entirely of linseed oil, is much 

 more flexible and possesses an unctuousness which pre- 

 vents it from cracking. But fish oil for leather purposes 

 shows a peculiar defect, and a campaign of education 

 will be necessary if ever this material is to be used for 

 the manufacture of shoes or auto tops, for fish oil, par- 

 ticularly when it originally has a high acid number, seems 

 to effloresce and gives an undesirable bloom to enamel 

 leather, which, however, can be removed from the sur- 

 face by the ordinary application of benzine or a mixture 

 of benzine and turpentine." 



"We are all aware that paint made from fish oil can 

 be applied to hot surfaces and will not blister or peel as 

 readily as that made from linseed oil, and for this pur- 

 pose — as a smoke-stack paint — it is very desirable." 



"There is great demand for baking japans which shall 

 be flexible and at the same time so thoroughly baked 

 that they adhere to the surface most tenaciously and 

 form an excellent enamel, and for this purpose we know 

 that the reasonable use of fish oil improves baking japans 

 very much indeed. We are also aware that along the 

 seacoast, where paint disintegrates very rapidly on ac- 

 count of the sea air, a fairly liberal use of properly treat- 

 ed fish oil serves a useful purpose." 



"When red lead is mixed 33 pounds to a gallon of lin- 

 seed oil it thickens up after a short time and becomes 



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