84 



SCIENCE. 



[N. S. Vol. II. No. 29. 



lines uniformly. In every case, displace- 

 ments tend to make the spectra of the ansse 

 parallel to the- undisplaced lines of the com- 

 parison spectrum. 



MINOR CONTKIBUTIONS AND NOTES. 



Notes on Schmidt's Theory of the Sun. 



Note on the Yerhes Observatory. 



On the Presence of Helium in Cleveite. 



Note on the Huggins Method of Photographing 



the Solar Corona ivithoitt an Eclipse. 

 On the Cause of Chxinidation of the Surface of 



the Sun. 



The illustrations of special interest are 

 the two plates accompanying Professor Bar- 

 nard's article, and a photographic reproduc- 

 tion of a water-color sketch of the Yerkes 

 Observatory as it will appear when finished. 



THE AMERICAN NATURALIST. 



The number for June opens with an 

 article by Professor E. H. Barbour, of the 

 University of Nebraska, on Dwmonelix, or 

 the ' Devil's Corkscrew,' described by him 

 in 1892. It is a reply to Dr. Theodor 

 Fuchs, who has argued that this curious 

 fossil is the burrow of a Miocene rodent. 

 Professor Barbour holds that this is impos- 

 sible, owing to the fact that the ' Bad Lands,' 

 in which the fossils occur, are not wind de- 

 posits but water deposits, and for other rea- 

 sons that he adduces. Dr.T.H. Montgomery 

 in an article On Successive Protandric and 

 Proterogynic Hermaphroditism in Animals, with 

 a bibliography of 48 titles, concludes that 

 hermaphroditism has been evolved out of 

 the female state in all proterogjmic forms, 

 but that in the care of protandric forms it 

 has been superimposed on the male sex. 

 Articles follow by Dr. Joseph F. James on 

 Sponges, Recent and Fossil, and by Mr. V. L. 

 Kellogg on The Mouth Parts of Lepidoptera, 

 both articles being illustrated. Dr. James 

 points out the wide distribution of sponges 

 in time and space, and, quoting from Sollas 

 similarities in apparently unrelated families, 

 concludes that forms now supposed to be 



genetically related may have been of dis- 

 tinct origin. Mr. Kellogg ai-gues that the 

 commonly accepted view that the mouth 

 parts of the Lepidoptera are of a type 

 adapted for sucking and that mandibles are 

 wanting or rudimentary is not true without 

 qualification. More than half of the num- 

 ber is occupied with notes and reviews on 

 the progress of the sevei'al natural sciences. 



-NEW BOOKS. 



Leitfaden fur Histiologisehe Untersuchungen. 

 Bernhaed Rawitz. Jena, Gustav Fischer. 

 1895. Pp. xiii+148. M. 3. 



Pjlanzen Physiologische Praktikum. W. Det- 

 MEE. Jena, Gustav Fischer. 1895. Pp. 

 xvi+456. M. 9. 



Untersuchungen iiber die Stdrkekorner. Ar- 

 thur Mayer. Jena, Gustav Fischer. 

 1895. Pp. xvi-f318. M. 20. 



Ueber die Auslese in der Erdgeschichte. Jo- 

 hannes Walthee. Jena, Gustav Fischer. 

 1895. Pp. 36. 80 Pt.. 



Die Etnancipation in der Ehe. Felicie 

 EwART. Hamburg and Leipzig, Leopold 

 Voss. 1895. Pp. 75. M. 1. 



Chinook Texts. FeanzBoas. Washington. 



1894. Pp. 278. 



A Text-Book of Zoogeography. Frank E. 

 Beddard. Cambridge, University Press. 

 N"ew York, Macmillan & Co. 1895. 

 Pp. 8+246. $1.60. 



The Natural History of Aquatic Insects. L. C. 

 MiALL. London and New York, Mac- 

 millan & Co. 1895. Pp.ix+395. $1.75. 



Electricity up to Date. John B. Verity. 

 London and New York, Frederick Warns 

 & Co. 1893. xii -1-226. 75 cents. 



Algebra for Beginners. By H. S. Hall and 

 S. R. Knight. Revised by Frank L. 

 Seven oak. New York, Macmillan & Co. 



1895. Pp. viii+180. 60 cents. 

 Report of the Secretary of Agricidture. Wash- 

 ington, D. C. 1895. Pp. 220. 



