Miscellaneous Intelligence. 75 
employed in the determination of latitudes and longitudes. It 
does not describe the fixed instruments of the observatory, and is 
_ therefore more complete in respect to portable ones. 
The present edition has been quite fully revised, the changes in 
instruments and improvements of methods having required con- 
siderable changes in the matter. The Repsold vertical circle and 
_ the Ertel universal instrument are especially described. e more 
_ recent methods of utilizing solar eclipses for determination of 
_ longitude replace the older ones. H,\Ay N. 
V. MISCELLANEOUS SCIENTIFIC INTELLIGENCE. 
1. International Geological Congress,—The American Asso- 
ciation for the Advancement of Science, at its meeting in Buffalo, 
tions of Paris, which were thrown open to the members of the 
The Congress was opened on the day appointed in the palace 
_ of the Trocadero, the Minister of Public Instruction for c 
_ presiding on the oceasion, and six daily sessions were held, with 
_ Hébert for president, assisted by numerous vice-presidents selected 
_ from the various nationalities. The whole num f bers 
da. 
e first session was devoted to structural and dynamical geol- 
ogy and included among others, papers by Daubrée and Alphonse 
avre, both giving results of experiments relative to the origin of 
