ACADEMY OF SCIENCES. 133 



and other insects differ more 'widely, but not being an expert in 

 that department, he Avould leave them for Dr. Behr to decide upon. 



Regular Meeting, August 15th, 1870. 

 President in the Chair. 



Donations to the Cabinet : Mr. Turrell presented some specimens 

 of fossilized wood from Dutch Flat. Dr. Aug. Le Plongeon pre- 

 sented some skulls from Peru. 



Donations to the Library : 



Anuario del Observatorio Fisico-Meteorico de la Habana in 18G2, Tonio 1, 

 1869, 4to ; Relacion del Gran Terramoto, Habana, 1868, pani. 8vo ; Sur la 

 Nature des Xuages, Recherclies our Polarization atmospherique, Yersailles, 

 1865,2 pam. 8vo ; Sur la Rotation des Nuages, 1864, Bibliograpliie Cj- 

 clonique, 1866, all 8vo ; Sur 1' Eclipse solaire de 18.56, 1863, Sur la pluie 

 d' Etoiles en Mexique, 1867, Sur las Colorations ozonoscopiques, 1867, all pam. 

 4to ; a new classification of Clouds, 6 articles in the Rural Xew Yorker, 

 1869-70, folio, all by Prof. A. Poey, from the Author. On fossil fishes of 

 Green river, Wyoming Ter., on Classification of Batrachia salientia, 2 pam. 

 8vo., E. D. Cope, Pbilad, 1869. 



Prof. Poey, director of the Observatory at Havana, up to the 

 time of the recent troubles there, and also an attache of the 

 French scientific expedition to Mexico, was presented as a visitor 

 and was invited to address the Academy. 



He made some remarks upon the books presented by him ex- 

 explaining the nature of their contents. He said in his remarks 

 on meteoric showers, that it had been established by Professors 

 Newcomb and Comstock, of the United States, that the usual 

 periods of these showers occurred in August and November, but 

 the longer periods, when they fall in great abundance, occurred 

 once in about ten years. He had observed that this cycle law for 

 short periods did not hold good south of the latitude of Cuba. 



He stated in his remarks on the spots on the sun, that all phys- 

 ical phenomena on the earth, such as storms, seasons of cold and 

 heat, etc., occur in cycles of nine or ten years or more, and that they 

 correspond to the astronomical cycles of the shooting stars, and also 



