JOURNAL OF CHEMICAL EDUCATION
378
long-continued heat of the furnace: which air mixes with the calx (frequent agitation siding) and becomes attached to its most minute particles: not otherwise than water makes heavier sand which you throw into it and agitate, by moistening it and adhering t o the smallest of its grains." There is no suggestion anywhere in these essays, nor in any of the writing in the seventeenth century, on the calcination of metals as a combination of air with the metal. Rey ernphasi~esthat the air has weight; heat from a. furnace or from a burning glass can render air denser and thus add weight to the calx. Dr. MeKie in the introduction gives three oapies of Jean Rey's rather unusual signature. The one plate is a copy of his inscription on matriculating in the University of Montpellier. The book is an attractive small volume bound in s wine-colored cover of cloth and oaoer. The orintine is excellent.
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WOOD CHEMISTRY.
DONALD F. OTHhlER
VOLUMES I AND I1
Edited by Louis E. Wise, The Institute of Paper Chemishy, Appleton. Wisconsin, and Edwin C. John, State University of New York, College of Forestry, Syracuse. Second edition. Rein688 pp. hold Publishing Corp., New York, 1952. Vol. I: id Vol. II: ix 653 (691-1343) pp. Illustrated. 15.5 X 23.5 cm. $15 per volume.
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as pulp and paper, rayon, cellulose films, lacquers and plastics, wood technology, botany and agriculturd chemistry, will gain from this valuable monograph a. solid foundation of basio wood chemistry and the penetrating insight into the application of this knowledge to modern industrial process." The first book of this series was the "Chemistry of Wood" by Hawley and Wise published in 1926 and containing 311 text pages; the seoond member of the series and the first with the present name, "Wood Chemistry," was by Wise alone in 1944 and contained 860 text pages. The present, 1952, volume contains 1343 paxrci~irrrminterim of cight yearhand true rfirrkr;.~wrond I of I . I o r the n n t c Onc 1 . i s h l , lrlilrht trv to e r t r ~ ~ ~ , o from h t c l l l i ? . m i ~ oi i 31 1, Sfdl :and 1343 pages an> find thai future editions will carry many more pages on wood chemistry. Certainly the rate is accelerating and certainly most of those which will be written in the future will be by men who will be using as their background the material contained in the present volumes.
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THIS treatise ranges from the growth, anatomy, and physical orooerties of wood, the oomponents and chemistry of the cell kdi, and the extraneous oombnents of wood in the first volume through the surface properties of wood, its chemical utilization, its biological decomposition, and its chemical analysis in Volume 11. Inmany ways it is a n expansion of the familiar first edition which has been installed as the principal reference book on the subject these last eight years on the bookshelves of everyone interested in wood. The contributors, over a. score of them, are a list of the experts a n this subject, so important from its scientific aspects and so important from its industrial aspects. The science of wood chemistry, its technology and applications, covers, by these interrelations with almost every other field of human knowledge, much that is important to our life and civilization. Not everyone of these intcl.~dationscan be given in the detail which it might deserve; but the selection of the editors and the contributors of these aspects t o be included and the compression of them into a space of only a little over 1,300 pages is remarkable and agrees generally with this reviewer's idea of relative importance. Many of the additions and modifications of the present volume have been due ta the use throughout the world of the earlier pres-' entations and the suggestions which have been received for expansion. Furthermore, in these years since the first edition, there have been entirely new fields which required attention because of these developments. The printing is exeellent; the paper itself, as should be ex~ e c t e din such a book of wood chemistry, is excellent; there are somewhat less than the expected number of illustrations owing to the fact that this is ~rimarilya book on science rather than on the mechanics of wood~technoiogy; and there is a n excellent subjeet index of 32 pages, so necessary where so many aspects of a given subject must be considered, The dust jacket blurb-
POLYTECFNIC INBTITUTE Bnoomm, NEWYOBB
ADHESIVES FOR WOOD
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R. A. G. Knight, Officer-in-Charge, Composite Wood Section. Forest Products Research Laboratory, Princes Resborough. Chemical Publishing Co., Inc., New York, 1952. xi 242 pp. Illustrated. 14.5 X 22 om. $5.
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T m s hook is a n American reprint of an earlier English book written principally from the standpoint of an engineer desirous of joining oomponents mechanically. There has been an attempt made to cover practices in other countries besides England, particularly the various parts of the British Commonwealth; but some of the more recent American practices and develop ments are not included. .4lthough i t deals specifically with fastening woody components, i t can be considered as a ready reference far most of the known adhesive types. Two general phases of the problem have been considered: &st the choice of a suitable material for specified conditions of service and secondly, or inversely, the answer to the question as to whether this is the best possible performance in service of the rlhosen ioint medium. After a brief introduction of the reader t n . I ~ ~ P ; I thrir V ~ *theory . : t t d ~vl.t~-ifiw~inu iis untural 011d S , V ~ rhr.rw in.tterials, rhr ;,mhur diwrsn,r thv various fxtora irn gluing twnniqors and sudr vu!rtn#lliur: I:irtors nc pressurr. rnolsturv. cleanliness of surface, pH, temperature, permeabilitv, etc. There is another section on the conditions under which adhesives are used including the moistme content relations of wood, behavior of wood in sheltered environments, and behavior in exposed environments such as boats, aircraft, etc. A final major section of testing of adhesives is followed by s clsssificstion of glues and discussion of bonding of woad to other materials. There is a. glossary of special terms and a comprehensive index. This will be a popular handbook for all interested in industrial spplications in this field. LOUIS G . RICCIARDI ~
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B n o o r ~ m .NEW Yon=
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