398 Domestic. 



Berzelius remarks, " is the same as the American Bruclte." 

 Indeed it obviously agrees in its characters with the mineral 

 wliose analysis by Mr, Seybert is published in this Number. 

 The Pyroxene Sahlite transmitted by Mr. Berzelius is 

 identical with that found near New-Haven, and whose anal- 

 ysis by Mr. Bovven is found at p, 344. 



46. J^ew Edition of Parkes^ Chemical Catechism. — Mr. 

 Parkes has published the 10th Edition of his caiechism and 

 an 8vo Edition of the Chemical Essays, is going through 

 the press, as we learn by a letter from the author. Edit. 



II. DOMESTIC. 



1. JVntural Ice House near WiUiamstown. — Extract of 

 a letter from Professor Dewey, dated August 16, 1822. 

 In No. 10 of the American Journal of Science and 

 Arts, pages 331, 332, is a notice of the Natural 

 Ice House near Williams College. The reference to my 

 name makes it necessary for me to request the insertion of 

 the following additional remarks. This Snow Hole, as it is 

 commonly called, is about a mile northwest of the north- 

 west corner of Massachusetts. As the southwest boundary 

 of Vermont is west of this cornerof Massachusetts, the Snow 

 Hole is believed to be in the town of Pownal, Vermont, 

 and very near the line which divides it from the state of 

 New- York. The lat. and long, are a few minutes greater 

 than those given by Mr. Dearborn. In No. 4 of this Jour- 

 nal I had already given an account of this Natural Ice House. 

 The dimensions of the chasm are rather greater than those 

 assigned by Mr. Ives. I visited this Snow Hole a few days 

 since, and found, on accurate measurment, that both the 

 length and depth were a little greater than those I had al- 

 ready given, the width being correct. The form of the 

 chasm is entirely irregular. 



Very little ice or snow was to be found in the Snow Hole. 

 The trees have been wantonly cut down to such an extent 

 within some years past, that the snow is entirely melted, 

 about the first of August. There are several chasms near 

 this principal one. A few rods farther north is one of near- 

 ly equal dimensions, and more fully protected by the ledge 



