204 [Assembly 



upper pair of wings are of a serai-transparent straw colour, with 

 six oblong spots of a dark brown on each sheath, making twelve 

 in all, placed longitudiually. This is the first instance that has 

 come within our knowledge of an attack on Indian corn by in- 

 sects of this species. The specimens will be disposed of as re- 

 quested by Mr. Schuyler. A. C. 



TEA FROM BRAZIL. 



Luis H. F. d'Aguiar, Esq., Consul General from Brazil, pre- 

 sented at the rooms of the Institute, specimens of Brazilian 

 Tea for examination. It was denominated as hyson; young 

 hyson; gunpowder; hyson skin; and black tea Specimens of 

 this tea, amounting to about forty, were distributed at the Far- 

 mers' Club, with a request that those who tried it would express 

 an opinion as to its quality. Returns have been received from 

 twenty, in which there is a general concurrence as to the black, 

 that it is very good. Of the other specimens the opinions are va- 

 rious, generally admitting it to be of fdir quality, but inferior to 

 Chinese. 



We are indebted to the polite attention of Mr. d'Aguiar, for 

 various contributions to our library, among Avhich are a series 

 of publications by tlie Auxiliary Society of National Industry, at 

 Rio de Janeiro, andM ercantile and Industrial Almanac of Brazil 

 for 1851, 12mo. 7U0 pages. A C. 



JOHN R. ST. J')lIiN'S VARIATION COMPASS AM) VELOCI- 



Mi-rri'ii. 



This instrument was awarded a gold medal by the American 

 Institute in 1849, and has since receired a prize medal at the 

 great exhibition, London. 



Mr. St. John's improvement consists in placing two small 

 needles upon pins equi-distant from and at right angles to the 



