Annual Report Of The Secretary Of Commerce

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1920 edition. Excerpt: ...complete ever obtained, will soon be made available in a Bureau publication. In connection with wooden airplane struts, it was found that the inequalities in the original wood introduces notable variations in the strength of the completed struts. In order to determine the deterioration of print paper with age, the paper laboratory of the Bureau is engaged in a comparison of recently made papers with similar papers tested by the Bureau 10 years ago. Forty samples show a decrease in bursting strength of 27 per cent. In the systematic comparison, however, it is necessary to take into account the relative accuracy in the test methods employed. A research was completed by request of the leather industry on the efficiency of the two principal methods of tanning leather for shoe soles. The Bureau found after laboratory tests combined with 28 service tests that the chrome-tanned sole leather outwore the oak-tanned leather by approximately 23 per cent per unit thickness. Typical examples of chemical researches in materials include investigations of such subjects as treating of ropes to make them acid resistant, the bleaching and staining of cotton, the bleaching of pearl buttons from fresh-water clams, the fireproofing of mail bags for the aerial mail service, the production of an " ashless" filter paper for laboratory and industrial purposes, the physical properties affecting the behavior of printing inks during printing, the preparation of glue from salted fur seal flippers, and a large variety of chemical problems affecting metals and structural materials. Another line of research on materials includes the development of new products. For example, the Bureau has cooperated in the development of a new fabric made of wood and waste silk which gives...

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.