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 16 pages. — A few facts about the Iowa Weatlier Service. 

 4 pages. — The Iowa Weather Service and how it is 

 supported. 4 pages. — To my friends, eorrespondents 

 and observers. 4 pages. — Flag Signals of the U. S. Signal 

 Service. 4 pages. 



The Academy of Xatural Sciences of Philadelphia, Penn. 



252. Proceedings. 1887. Part III. Piiiladelphia 1887. 



The Chief Signal Officer, U. S. Army, WaHhington, D. C. 



*253. Monthly Weather Review. Jan. 1888. Washington 1888. 4to. 



*254. International Meteorological observations. Febr. 1887. Washington 

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La Sociedad cientifica, '^Antonio Alzate«, Mexico. 



255. Memorias. Tomo I. Cuaderno mim. 8. Mexico 1888. 



Professor Francis E. Nipher, Washington University, Sf. Louis, Mo. 



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Det Danske Meteorologiske Institut, Kjøbcnhavn. 



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258. Bulletin météorologique du Nord. Mars 1888. 

 Bergens Museum, Bergen. 



259. Dr. J. Brunchorst. Naturen. 12. Aarg. No. 3— 4. Bergen 1888. 

 Die Naturforscher-Gesellschaft hci der Universitdt Dorpat. 



260. K. Weihrauch. Neue Untersuchungen iiber die Bessel'sche Formel und 

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The Royal Astronomicai Society, London. 



261. Monthly Notices. Vol. XL VIII. No. 5. London 1888. 

 The Royal Microscopical Society, London. 



262. Journal. 1888. P. 2. London 1888. 



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263. Iron. Vol. XXXI. Nos. 796—97. London 1888. Fol. 



Die kon.- Siichsisclie Gesellschaft der Wissenschaften, Leipzig. 



264. Abhandlungen. Philol.-Hist. Classe. Bd. X. Nr. VIII. Leipzig 1888. 

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265. Bollettino. Vol. II. No. 4—6. Roma 1888. 

 La Reale Accademia dei Lincei, Roma. 



266. Atti. Anno CCLXXXV. Serie 4^. Rendiconti. Vol. IV. Semestre 1. 

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Biblioteca Nazionale Centrale di Firenze. 



267. Bollettino. 1888. Num. 55. Firenze 1888. 



268. Indici dell'annata 1887 del Bollettino. Pag. 113-128. 



