( 63 ) 



Officiai Copy (n"?;}). — Meleorologicalohse.n>alions al stations of the second 

 order for t/ie ycar iii8'5. iMiulon, 1888; i vol. in-4". 



Officiai Copy (n° 74). — Hoiuiy readings, i885, Part II, april to june. 

 London, 1888; br. in-4". 



Officiai Copy (n" 76). — Charts showing the mean h arôme trie al pressure 

 over the Atlantic, Indian, and Pacific Océans. Published by the autority of 

 the meteorological Council. London; atlas in-f°. (Présenté par M. Mascart.) 



Observations on the embryology of insects and arachnids ; by Ad km Todd 

 Bruce. Baltimore, publication agencv of Johns Hopkins University, 1887; 

 br. gr. in-4''. 



Compilation of notes and memoranda hearing upon the use of human or- 

 dure and human urine in rites of a religions or semi-religions character; by 

 John G. Bouuke. Washington, 1888; br. ia-8°. (Deux exemplaires.) 



A Treatise on the chemical constitution of the brain, based throughout 

 upon originairesearches ; by J.-L.-W. Thudichum. London, Baillière, Tin- 

 dall and Cox, 1884 ; i vol. in-8°. 



Elementos de Geometria analitica; par José Maria Villafane y Vinals. 

 Valencia, t883; i vol. in-8". 



Teoria de los déterminantes ; por e\ D' José Maria Villafane y Vinals. 

 Barcelona, 1888; i vol. in-8°. 



Dell' antico studio di liologna e sua origine; per Giacomo Cassini. Bo- 

 logna, regia Tipografia, 1888; i vol. in-8°. 



Archivas do Museu nacional do Rio de Janeiro ; volume VII. Rio de Janeiro, 

 Imprensa nacional, 1887; i vol. gr. in-4°. 



ERRATA. 



(Séance du 23 juin 1888.) 



Note de MM. C. Friedel et J.-M. Crafts, Sur la densité de vapeur du 

 chlorure d'aluminium et sur le poids moléculaire de ce composé : 



Page 1769, expérience 6, colonne 3, au lieu de 9,93, lisez 9,88. 

 Page 1770, ligne 16, au lieu de il semble, lisez il ne semble pas. 



