However, in the samples of the fabric that I made, I found approximately 1 to 2 percent woolen fibers, 20 to, I would say, 30, 35 percent cotton fibers, and the remainder of it viscose fibers. This is just an approximation from the microscopic slide that I made.
Mr. Eisenberg. Would you have any reason to believe that the approximation was not made from a fair sample of the blanket?
Mr. Stombaugh. No; I wouldn't. I took the sample myself.
However, the blanket is very well worn. Most of the nap has been worn off of it. It has had a lot of use, and much of the original composition has been worn off. Now, whether or not this same percentage of composition is missing from use or not I wouldn't be able to determine, but I would say that the approximation that I had given is fairly accurate for the blanket in its present condition.
Mr. Eisenberg. Mr. Stombaugh, could you explain to us briefly how you were able to distinguish the three fibers, cotton, wool, and viscose?
Mr. Stombaugh. Yes, sir. This chart shows the difference in the textile fibers when one observes them under a microscope. A cotton fiber appears to be, or rather, might be compared with an ordinary soda straw which has been flattened. You can see here that the fiber is hollow. The hollow is known as the lumen in cotton. The fiber is flattened and twisted much as teenagers do to soda straws in drug stores when they twist and crush the soda straws.
Mr. Eisenberg. Pardon me, Mr. Stombaugh: this chart is a chart labeled "Textile Fibers," and having three illustrations labeled "Cotton," "Wool," and "Viscose"?
Mr. Stombaugh. That is correct.
A woolen fiber actually is a hair which originates from an animal and is composed of three basic parts, the outer part being the scales which are the rough area on the outside of the hair, the inner portion known as the cortex, and a center portion known as the medulla. Microscopically this is what you would look for to identify wool.
Viscose is a synthetic fiber that is made by man. It is composed of chemicals, and is very rough around the outside area, having many striations running through it. The viscose fiber I have drawn here is what we would term a lustrous fiber. It does not have the delustering agent added to it, to cut down the luster. If this were a delustered fiber then we would have millions of small spots on the outside of this fiber which have been placed there chemically so as to cut down the luster of the fiber.