1824.] Mr. Whipple's Reply to Mr. Phillips. 463 



Article XII. 



(To the Editors of the Annals of Philosophy.) 



GENTLEMEN, 



Feeling extremely anxious that my reply to Dr. Fitton 

 should be inserted in the Annals of this month, I am sorry to 

 find that your previous arrangements have rendered that impos- 

 sible. Since several geologists are concerned in the question, 

 and may write upon the subject, I trust that my reply will find 

 a place in the next number, and that your readers will suspend 

 their judgment until they read my paper, which is connected 

 only with that by Dr. Fitton already published in your last. 



I am, Gentlemen, yours, &c. 



T. Webster. 



Article XIII. 



Answer to Mr. Phillips's Observations on the London Pharma- 

 copeia. By Mr. G. Whipple. 



(To the Editors of the Annals of Philosophy.) 



GENTLEMEN, Imion, Aug. 11, 1824. 



In reply to a few of the hints given in the Annals of Philoso- 

 phy for June, by way of improvement on the formulae constituting 

 the New London Pharmacopoeia (1824), 1 should esteem it an 

 obligation, if favoured with a translation of the first nineteen 

 lines of the paper, the parvum in multo. 



On the formula for the preparation of sulphate of potash, the 

 writer of the paper is most fatally mistaken. In my opinion, 

 the College have acted most judiciously in directing that the 

 excess of acid be saturated with potash, instead of lime, for, in 

 this instance, they employ, a salt of a very inferior value to 

 obtain one of a greater, (and, by the bye, of some considerable 

 importance to every manufacturing chemist), and, therefore, 

 contrary to the opinion of the writer (of that paper), who says, 

 "The College would have acted economically in imitating the 

 directions of the Edinburgh Pharmacopoeia, by saturating the 

 excess of acid of the bisulphate, with lime instead of potash ; by 

 this the waste would have been avoided of using a salt of greater 

 value to obtain one of less." A single importunity to any of the 

 drug warehouses will convince him of his error. Moreover, I 

 would ask, since economy be the maximum on which he has 

 founded his examination, whether this salt could not be more 



