Miscellaneous Intelligence. 505 



Press.) — This large volume is a very full Manual of Comparative 

 Anatomy for the student, and is well adapted to its purpose by 

 the completeness of its explanations and directions and the num- 

 ber of prepared types which it discusses. These embrace species 

 from all the grander divisions of the Animal Kingdom, in the 

 following order: Mammals, Birds, Reptiles, Amphibians, Fishes, 

 Ascidians, Gastropods, Lamellibranchs, Insects, Crustaceans, 

 Asteroids, Chsetopods, Hirudinea, Cestoda, Polyzoa, Anthozoa, 

 Hydrozoa, Porifera, Infusoria and Amcebina. The subjects are 

 illustrated by 14 excellent plates of the various subjects consid- 

 ered, besides various fine wood cuts. 



4. Die Japanische Seeigel von Dr. Ludwig Doclerlein, of 

 Strassburg. 1 Theil. Fam. Cidaridse unci SaleniidaB, mit Taf. 

 I-XI. Stuttgart, 188V (E. Schweizerbart'sche Verlagshandlung). 

 — This memoir has remarkably beautiful plates illustrating 

 descriptions of some new species of Cidarids from Japan and also 

 recent species of other regions described by different authors, and 

 also gives a review in detail of the general character and history 

 of the group. 



5. Bibliotheca Zoologica II. Verzeichniss der Schriften iiber 

 Zoologie welche in den periodischen Werken enthalten vom 

 Jahre 1861-1880, selbstandig erscheinen sind mit Einschluss 

 der allgemein-naturgeschichtlichen periodischen und palaeontolo- 

 gischen Schriften, bearbeitet von Dr. O. Taschenberg, Docent 

 an der Univ. Halle. Fitnfte Lieferung, Signatur 161-200. Leipzig, 

 1888. (Wm. Engelmann). The earlier parts of this important 

 work have been noticed in volumes xxxiii and xxxiv of this 

 Journal. 



IY. Miscellaneous Scientific Intelligence. 



1. The Constant of Aberration. — Professor Hall has published 

 in the Astronomical Journal the results of his reduction of the 

 observations made in the years 1 862-7 upon a Lyrae by Profess- 

 ors Hubbard, Newcomb, Harkness and himself with the prime 

 vertical transit instrument of the Naval Observatory, for the 

 purpose of determining the constants of mutation and aberration. 

 He obtains as the most probable value of the constant of aberra- 

 tion 20"-4542±0 // -0144. This with Michelson and Newcomb's 

 velocity of light gives for the solar parallax 8 // '810 = h0' /, 0062. 



2. Discovery of Small Planets. — The small planet (183) Istria 

 was rediscovered by Paliser April 7th. Of the first 250 of the 

 planets at least 238 have therefore now been observed at a second 

 opposition. Only two of the exceptions are between (200) and 

 (250). The planet (278) was discovered by Borelly at Marseilles, 

 unless this should prove to be Xantippe (156). 



3. Michigan Mining School. — This mining school, at Hough- 

 ton, Michigan, is the only school of mining east of the Mississippi 

 that is located in a region of mines. Being on Keweenaw Point, 

 in the vicinity of the great copper mines, it has the special ad- 



