However, these critical remarks are not intended in any way to belittle the outstanding achievement of the editors and authors. These three general volumes are indisputably the most comprehensive and most up-to-date work in existence on the field of chemical process technology as a whole; this is true even as far as foreign literature is concerned. It is worth mentioning that the new Ullmann also contains lists of contents and indexes in English. The presentation, illustra- tions, and print are of outstanding quality. Each contribution is followed by a clearly arranged list of references. As in the previous edition, these general volumes will be of immense assistance to anyone who is concerned with process problems, both as a source of general information and as a source of advice on special problems. The latter case will particularly concern the practical engineer or chemist con- fronted with the question which process and which equipment are most suitable for a given purpose. This question of the choice of processes and equipment, which is not discussed in the same depth in all the contributions of Volumes 2 and 3, should be treated on a broader basis in Volume 4, which will be available shortly.

Ulfert Onken [NB 199 IE]

The result is a very useful literature compilation, which cannot always be complete, owing to the width of the individual fields. This Volume 4 unfortunately does not contain a chapter on organometallic compounds of the elements of the second main group. However, the editor B. J . Aylett assures us that a chapter on this topic will be included in the above-mentioned volume in the second series. The work is not a pure list of highlights, nor does it have the character of a detailed review. It adopts a reasonable intermediate position, and it is pleasing to note that it contains few printing errors. The presentation of the work is very good, and it can be recommended to any organometallic chemist as a literature survey.

Jochen Ellermann [NB 201 IE]

[ I ] Cf. Angew. Chern. internat. Edit. 9, 647 (1970).

MTP International Review of Science. Inorganic Chemistry: Series One. Edited by H . J . Emeleits. Volume 4: Organome- tallic Derivatives of the Main Group Elements. Edited by B. J . Aylett. Butterworths, London, and University Park Press, Baltimore, 1972. 1st ed., 424 pp., numerous figures, bound E lo.-.

The series “Inorganic Chemistry” comprises a total of ten volumes and an index volume. Thefirst series contains impor- tant progress reports on work published during the period from about 1967 to 1971. The second series, which is of roughly the same size, is scheduled for 1974; it will contain reviews of publications from the period 1971-1973. Further series will follow at roughly equal intervals. Volume 4 of the first series is divided into nine chapters, which largely embrace the field of the organometallic chemistry of the main group elements. The material is divided as follows: Organoalkali Metal Compounds (author : P. Wesr): Organo- derivatives of Zinc, Cadmium, and Mercury (K. C . Bass); Organoboron Compounds ( K . Niedenzu) ; Aluminum, Gal- lium, Indium, and Thallium ( J . B. Farmer and K . Wade); Silicon, Part 1 (V. Chvalocsky) ; Silicon, Part 2 ( H . Biirger) ; Germanium (E . J . Bulten) ; Tin and Lead ( A . J . Bloodworth) ; Organic Compounds of Arsenic, Antimony, and Bismuth ( J . P. Crow and W. R. Cullen). In these nine chapters the authors report the most important developments in the various fields during the years 1969 and 1970. The reports are based on 2608 literature references. All earlier review articles and books dealing with the field in question are generally also cited in the various chapters.

Interpretation of Mass Spectra. By F. W McLafferty. W. A. Benjamin, Reading 1973.2nd revised and enlarged edition, xix, 278 pp., bound $ 15.00; stitched $ 7.50.

Englisch fur Chemiker-English for Chemists. By F. L. Boschke, B. M . Crook, and G. N . Tomby. Wissenschaftliche Verlagsgesellschaft mbH, Stuttgart 1973. viii, 93 pp., stitched DM 12.50.

Environmental Literature. A Bibliography. By G. F. Bennett and J . C . Bennett. Noyes Data Corporation, Park Ridge 1973. viii, 134 pp., bound $ 18.00.

Drilling Mud and Fluid Additives. By J . McDermott. Volume 20 of the series “Chemical Technology Reviews”. Noyes Data Corporation, Park Ridge 1973. x, 305 pp., bound $36.00.

Photographic Emulsions. Recent Developments. By R. W James. Volume 21 of the series “Chemical Technology Reviews”. Noyes Data Corporation, Park Ridge, 1973. x, 303 pp., bound $36.00.

Furans. Synthesis and Applications. By A . Williams. Volume 18 of the series “Chemical Technology Reviews”. Noyes Data Corporation, Park Ridge 1973. x, 301 pp., bound $ 36.00.

Contents: Furan and Substituted Furans; Tetrahydrofurans; Benzofurans and Dibenzofuran; Dihydrobenzofuran; Dihyd- rofurans, Furanones, and Griseofulvins.

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424 Angew. Chem. internar. Edit. 1 Vol. 13 (1974) 1 No. 6