TO CORRESPONDENTS. 



We have received the letters from Liverpool, which we are 

 under the necessity of declining to insert ; they are therefore 

 disposed of as the writer directs. 



In articles XII. and XIII. of this Number, we take leave of the 

 Par Vagum and Oil controversies : both parties have now had 

 a fair hearing, and as the principals concerned are our per- 

 sonal friends, we have thus far been anxious to comply with 

 their wishes. Although we shall be glad of any facts relating 

 to either of these subjects, we can no longer admit replies and 

 rejoinders; so that our " Friend and Adviser," whoever he may 

 be, as well as our " Constant Reader" and the " Rabbit's Advo- 

 cate," need not make themselves uneasy. We hope, too, that 

 ELiEOGABALUs wiU be satisfied, as he only shares the fate of 

 his betters. 



We are much obliged to our correspondent at Hindon for 

 his paper on the Hop ; perhaps he will be kind enough to 

 throw the experimental part into a more condensed form, and 

 we shall then be happy to publish it ; we fear that the brewers 

 know full well the use of Quassia to which he adverts. 



With the ingenious Author's permission, the article on Se- 

 cret Writing, will be given in our next Number. 



Our correspondent Johnson is rather too hypothetical, but 

 we hope to hear again from him. 



My dear Sir, Blackman Street, June 26th, 1621. 



In the catalogue of the forty-six stars, published in your Journal 

 of January last, the mean right ascension of Antares is given 16. 18 25 89 



H M S ' 



this is incorrect, it ought to be 16. 18. 26.89 ; by informing your astrono- 

 mical readers of this fact, you will preserve them from some trouble, and 

 their observations from much error. 



I remain, my dear Sir, 

 ^« Yours, very truly, 



W. T. Brandc, Esq. J. South. 



