SCIENTIFIC NEWS. 319 



Some anatomists have taken this tubercle for a gland, others Tubercle ia 

 for -a muscle; but it appears, from the minutest research, ^j^ b 

 to be a convolution of the larger bloodvessels, and Mr. Al- 

 ters considers it as a sort of reservoir for the blood, a kind 

 of rete mirabUe. 



The air bladder of the sapphirine gurnard, trigla hirundo, Air bla( *der of 

 L., differs very remarkably in its internal structure, as well 

 as in its shape, from that of any other known fish. It is 

 near three inches-long, two broad, and more than one deep. 

 At one end it has the appearance of having received a deep 

 gash, and at the other of two. The first is formed by a 

 slight separation of about three quarters of an inch; the 

 others by two perpendicular separations, nearly parallel, and 

 more than two inches long. 



The loss of any one of the senses is certainly a serious Establishment 



calamity, but that cf sight is on many accounts the most for ***e educa* 



^ .; '. j T; ' , n tion of the 



important. Every attempt to alleviate tins loss therefore bii a .j. 



deserves encouragement, and may be expected to meet suc- 

 cess proportionate to its merit. The establishment of Mr. 

 Haiiy at Paris, some remarks on which by Mr. Berard were 

 given in our Journal, vol. Ill, p. 189) was formed near 

 thirty years ago, and has been imitated we understand in 

 other parts of Europe. The benefits, that have already re- 

 sulted from the School for Indigent Blind in St. George's 

 Fields, are no doubt known to many of our readers; but 

 from a participation in these the children of the wealthy are 

 excluded, nor indeed would they be adequate to their wants. 

 We are happy therefore to learn, that an establishment is 

 recently formed at Chelsea for teaching not only reading and 

 writing, but the various sciences, to the opulent blind ; so 

 that the children of the rich, .labouring under this misfor- 

 tune, may have it alleviated as far as is practicable. The 

 plan appears to be, on the whole, highly commendable: but, 

 as it is yet in its infancy, the author, Mr. Bonner, would be 

 happy to receive any suggestions, that could tend to its ur\ T 

 provement. 



To CORRESPONDENTS. 



Mr. Shute's paper was too late for insertion this month. 



Meteorological 



