302 Scientific Intelligence. 



by Senor Fkz-Simon. The observations are 

 Dr. Gould, and the r 

 and by plates. 



3. Monograph of the Central parts of the Nebula of Orion; 

 by K. S. IIoi.ukx. A{i))ciidix to the Washington Astron. Obser- 

 vations tor l*7S. 4°, pp. 230. Government Printing Office, 1882. 

 — This is an elaborate resume and discussion of all the observa- 

 tions hitherto made on the central parts of this nebula. The 

 accessible published and unpublished drawings are in general 

 reproduced. The author's observations made with the Washing- 

 ton 2«;-ineh teleseope from 1874 to 1880 are added, and the mono- 

 vith the photograph taken by 



graph very appropriately closes wit 

 Professor lb my Diaper, March 14, 



Report of the Sop, riot, ,,<!, „t ,,f H,< C S. Coost <t»<l Geo- 

 (l,ttr Sore, y, f,o- t/o >/>,,,■ ,„,/;„,/ ./,,»,. 1*7*. Washington, Gov. 

 Printing Office, 1881.— Besides the full account of the work on 

 the coasts and in the interior done by the survey during the year, 

 this report has w ith other subjects in the appendices; Observations 

 on the Transit of Mercury ; Adjustment of the primar\ triangula- 

 tion between the Kent Island and Atlantic base-lines ; Physical 

 Survey of the Delaware river in front of Philadelphia, by Henry 

 Mitchell; Meteorological researches, by Wm. Ferrel ; and Dis- 

 cussion of Tides in Penobscot Hay. by Wm. Ferrel. 



The triangulation between Kent Plan.! and the Al lantic consist- 

 ing of sixty-two triangles and stretching over tio-j miles, gave for a 

 central Puu- of the chain ■_".»•.-. miles long only a difference in length 

 of half an inch, according as the length was computed from the 

 one or from the other base line. The treatment of the triangles 

 is given in full by Mr. Schott and Mr. Doolittle. 



The first <"" 

 ornadoes, ai 



5. Reportofthe Superiot, o<ltof of t!„ r. S. Coast and ( 

 Survey for the gear < nding June, 1 879. Washi 

 Appendices to this report of the late s 

 son, include the following among other' papers: Comparison of 

 local deflections of the plumb-line, by C. A. Schott; Secular 

 change of magnetic declination in the U. S. and at some foreign 

 stations, by C. A. Schott (fourth edition); Phv-ical Geography of 

 the Gulf of Maine, by Henry Mitchell; The internal constitution 

 of the earth, by B. Peiice; Instruments and methods used for 







The decided superiority of Clarke's spheroid over Hesscl's for 

 the figure of the earth is shown by Mr. Schott. 



u. /tesifltadoa del Observatorio National Argentino en C6r- 

 doho, r.KX.i. A. Gorih, director. Vol. ii. Ibienos Aires, 1881.— 

 The first volume of this series was the Pranoim-t ria Argentina (see 

 this Journal, xi.v, p. :J70). The present volume contains the zone 

 observations of lS7-\ beinu \i< /.one- with an a vera --v of over ion 



