738 



SCIENCE 



[N. S. Vol. XXV. No. 645 



cysts and the merozoites were regularly found 

 in the liver and kidney. Interesting forms 

 from the jerboa flea which were at first re- 

 garded as developmental stages of this hsemo- 

 gregarine were found on further investigation 

 to be in reality parasites of the flea itself. 

 Other forms from small mites (Dermanyssus) 

 which infest the jerboa may prove to be the 

 developmental stages sought. Another very 

 interesting series of observations concerns a 

 leucocytozoon of mammals, obtained from the 

 blood of a Norway rat, although it could not 

 be found in numerous examinations of the 

 blood from many Egyptian rats. 



Trypanosomiasis in the Anglo-Egyptian 

 Sudan received careful attention. In the re- 

 gion south of the tenth parallel of latitude it 

 certainly exists to a very considerable extent, 

 affecting donkeys, horses, mules and possibly 

 camels. This is not the species, Trypanosoma 

 Tuinum, found in cattle. Of the latter disease 

 the report discusses at length its symptoms 

 and post mortem findings, as well as its mor- 

 phology and inoculation experiments. Similar 

 though more extended records are given for 

 an undetermined species from mules which 

 is probably identical with T. dimorphum. 



One very interesting chapter embraces the 

 report of the traveling pathologist and 

 naturalist, Sheffield Neave, who spent four 

 months in the field in southern Sudan. His 

 chief effort was to locate the natural source 

 of infection with the tropical blood parasites. 

 In all he made 750 blood films, from 55 human 

 subjects, 118 other mammals, 69 birds, 33 fish, 

 6 amphibia, and 18 sheep ticks. Trypano- 

 somes were found in man, the mule, four fish, 

 and two birds. Eilarise were found in five 

 birds, Halteridium in eight, and a new 

 Hcemamceba in one. All of these forms are 

 described in detail. Many insects and a few 

 plants were collected on the trip, and numer- 

 ous data recorded regarding the tribes with 

 which he came in contact. 



The chemist of the Wellcome Research 

 Laboratories gives a valuable chapter on a 

 multitude of subjects from the chemical com- 

 position of Nile waters to the use of asbestos 

 in ancient burial, and new forms of chemical 

 apparatus. It would be impossible even to 



cite all, but the extended study of gum arable, 

 its varieties, occurrence, uses, grading, de- 

 termination of viscosity, etc., and the careful 

 examinations of Nile waters are investigations 

 of fundamental importance. 



The work is well printed and splendidly 

 illustrated. One hundred and six fine text 

 figures and twenty-one full-page superb 

 colored plates add greatly to the scientific 

 value of the report. 



Such rich results refiect great credit upon 

 the director and his staff and furnish a most 

 ample justification of the generosity and fore- 

 sight of the founder. Institutions more favor- 

 ably outfitted and conveniently located may 

 well be jealous of their laurels when such 

 reports as this appear. 



Heney B. Ward 



Zoological Department, 

 University of Nebraska 



A 1671 ENGLISH version OF NICOLAUS STENO'S DE 



SOLIDO INTRA SOLIDUM NATURALITER 



CONTENTO, BY H. O. 



The recent reprinting of Steno's classic 

 ' Prodromus ' in Germany has revived the in- 

 terest in this seventeenth century anatomist 

 and geologist and in the few scarce editions 

 of his remarkable treatise. His famous tract 

 which appeared in Latin at Florence in 1669 

 was, according to Professor von Zittel, re- 

 printed in Leyden in 1679 and a French trans- 

 lation was brought out by Elie de Beaumont 

 in 1832, but neither von Zittel nor the book- 

 lists to which I have had access make men- 

 tion of an English translation of the book. 

 Just recently there fell into my hands an 

 evidently little known English version printed 

 in London in 1671, with the following title- 

 page : 



The I Prodromus | to a | Dissertation | Con- 

 cerning I Solids Naturally Con- | tained within 

 Solids. I Laying a Foundation for the Ren- | dar- 

 ing a Rational Accompt both of | the Frame and 

 the Several Changes of | the Masse of the Earth, 

 as also I of the various Productions in the 

 same. | By Nicolaus Steno. | English'd by H. 

 O. I London, | Printed by F. Winter, and are 

 [sic'] to be Sold | by Moses Pitt at the White- 

 Hart in I Little Brittain, 1671. 



