August, 1S41.] 71 



Dr. Coates called the attention of the Academy to the white- 

 ness, thinness, and semi-transparency of the specimen exhibited 

 by Dr. Morton, in all the lines usually exhibiting the sutures. This 

 he considered, not only as indicating the previous existence of 

 real sutures, but as corresponding with the views entertained, by 

 some late comparative anatomists, in regard to the analogy of 

 parts. He alluded to those who believe the analogous parts in 

 animal formations to exist to a very great extent indeed, although 

 composed of very diversified materials, and adapted to very dif- 

 ferent purposes in the various beings in which they exist. 



ORDINARY MEETING, August 24, 1811. 

 Vice President Morton in the Chair. 



DONATIONS TO CABINET. 



The Society received from the estate of the late William 

 Maclure, through the hands of his brother and executor 

 Alexander Maclure, a five feet Achromatic telescope, 3i 

 inches in the aperture, with two terrestrial and two celestial 

 eve-pieces, adjusting screw, &c. It bears the maker's name, 

 " Lerebours, Quai de l'Horloge, a Paris." 

 To the Collection of Shells : Voluta pallida, Conus geogra- 

 phies, Turbinella craticulata. From Mr. Draper. 

 Bulimus multicolor (Rang) Brazil ; and a Helix, probably 

 nondescript, from the Bonin Islands. From Dr. Ruschen- 

 berger. 

 To the Mineralogical Collection : Fine specimens of lami- 

 nated Selenite, lamellar Sulphate of Strontian and Dog- 

 tooth Spar, from Lockport, N. York. Also, Specular Iron, 

 two specimens, doubly refracting Spar, and a gigantic 

 crystal of Calcareous Spar, a hexaedron with truncated 

 angles, and weighing 27 lbs.; from Rossie, New York. 

 Alf presented by Mr. Ashmead. 



