Textile Research Journal

It is the purpose of this paper to present data on equilibrium moisture based upon the published work of Wiegerink [4] statistically recalculated by the present au thors. The study was first undertaken in the belief that Wiegerink's data could be made more useful if his curves of equilibrium moisture versus relative humidity could be extended with respect to temperature and relative humidity ranges and if the experimental variations in the data could be accurately minimized. In the analysis it was found that characteristic results for fibers could be explained in terms of physical-chemical principles which were presented and discussed in the first paper of this series [3]. The second publication [1] presented the mathematical details of the statistical correlation method.

In response to a request by TEXTILE RESEARCH JOURNAL for a brief report of the use of supersonics in the preparation of fiber samples for studies with the elec tron microscope at the Institute of Plant Physiology, Zürich, Switzerland, Dr. Frey-Wyssling, Director of the Institute, submitted this paper for publication.

It will be noted that the photographs show the typical fibrillation of fibers similar to that obtained in a ball mill except that they are much clearer. There is less debris attached to the fine strands which seem to have been separated into finer and finer units as described by the authors. If these photomicrographs are studied under a magnifying glass considerable detail can be observed.

In this department from time to time are published discussions of papers which have appeared in previous issues of this publication. These are presented in the belief that such discussion will result in bringing out additional information with respect to a given subject. The JOURNAL welcomes comments concerning papers which it publishes. When possible, additional data from the correspondent's re search should be incorporated. The editors of course reserve the right to decide whether comments will or will not be published in this department.

Reprints of the original articles abstracted in TEXTILE RESEARCH JOURNAL are often available from the publishers. Otherwise, it may be possible to secure copies of the periodicals. Orders should be sent direct to the publishers.

Photostat negatives of articles abstracted will be furnished to members of the Institute at a cost of 25 cents per page for pages not exceeding 7 inches in width and 35 cents per page for larger sizes up to 11½ x 14 inches. Photostats of patents are 35 cents a page. Postage will be added.

Microfilm copies and paper enlargements of microfilm may be obtained from: Microfilms Inc., 313 N. First St., Ann Arbor, Mich.; New York Public Library, New York, N. Y.; Yale University Library, New Haven, Conn.; Harvard University Library, Cambridge, Mass.; and Library of Congress, Washington, D. C. Transla tions may also be obtained from the above sources.

The JOURNAL is again offering to its subscribers reprints of the Abstracts and Book Reviews sections, printed on one side of the sheet so that the items may be clipped, pasted on cards, and filed for permanent reference. Sub scriptions to this service for 1947 are $3.00 each. Orders for this special service should be mailed at once to Textile Research Institute, Inc., 10 East 40th Street, New York 16, N. Y.

A list of periodicals, the abbreviations used in references to articles, and the addresses of publishers of English language publications is given below.