APPENDIX. 583 



had come to Paris to study under him, have now spread his doctrine 

 over the world. 



M. Haiiy was carried off at the moment bis reputation was univer- 

 sally established ; he had the good fortune, to finish the structure of 

 which he had laid the foundation. Not long before his death his crys- 

 tallography had appeared, and the manuscript of the second edition of 

 his treatise of mineralogy was in the printer's hands. 



Forty years of his life were spent in forming a complete series of 

 crystals ; this collection is singular, it is the type of his great work, and 

 is labelled by himself. It would be desirable that the Museum should 

 obtain possession of it as an object of study, and a monument of the 

 greatness and generality of the discovery. 



M. Haiiy has been replaced at the Museum by M. Brongniart, for 

 several years his substitute at the faculty of sciences. This nomination, 

 made by the king in accordance with the unanimous choice of the aca- 

 demy of sciences and the professors of the Museum, leaves no doubt 

 that our institution will continue to preserve the just reputation it has 

 acquired. 



The description we have given of the collections of the Museum carry 

 us to the close of 1822, but it would be incomplete if we did not notice 

 the new riches acquired, and the changes lately made in the distribu- 

 tion of the objects. 



At present the collection of fishes fills one part of the old room and 

 that which contained the library. The cases emptied are now occupied 

 by the reptiles, the species are in the order we have indicated. 



At the entrance to the cabinet on the landing place of the staircase, 

 above the basalts, have been placed two fragments of columns of the 

 temple of Serapis at Puozzola. These fragments have been pierced by 

 pholades consequent to a most singular geological phenomenon (i). 

 vThere is also to be seen a case enclosing a calcareous block from mount 

 Bolca, divided into laminae, on each of which are seen fossil fishes. 



The objects which were formerly in the five armories to the left of 

 the room containing the rocks have been distributed in the collection 

 of minerals and rocks, beside the species of which they form the mat- 

 ter. The saloon of rocks contains only at present the two collections 

 that give it its name, viz, the methodical and geographical series. v 



(i) This phenomenon consists in the soil which supported the temple of Serapis, after hating 

 l)en for a lapse of time buried under the waters of the sea, again becoming dry. 



