THESE two parts are devoted to accounts of the morpho logy, structure, and classification of animals from Protozoa to Chordata, and the author has been faced with the problem of what to include and what to omit— as are all writers of text-books, and each author has his own views on the subject. But is seems difficult to justify the inclusion of even short accounts of relatively rare parasites of man, the affinities of some of which (e.g. Rhinosporidium, the Spirochætes, and the Chlamy-dozoa) with the Protozoa are more than doubtful. The brief description and single figure of the Mesozoa can be of little use, and the same may be said of the characterisations in two or three lines of many of the families of cœlenterates and other Metazoa. It is evident the author has carefully rationed himself in his descriptions of the more important organisms in regard to many of which further detail would have been helpful. The extent of the compression may be judged by citing as examples the Prototracheata, which are dealt with in 20 lines of text and 4 figures, the Scyphozoa in 30 lines and 5 figures, the rotifers in 26 lines and 2 figures, the Diptera in 15 lines and 4 figures; there are short descriptive legends to most of the figures.
Zoologie im Grundriss.
Von Prof. Dr. Walter Stempell. Erste Lieferung. Pp. xviii + 160. 6.60 gold marks. Zweite Lieferung. Pp. 161–336. 6.90 gold marks. (Berlin: Gebrüder Borntraeger, 1925.)
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Zoologie im Grundriss . Nature 117, 513 (1926). https://doi.org/10.1038/117513a0