30 Mr. Mill on Lupulin, [Jan. 



the wire through a lawn sieve ; nothing will now pass but a 

 very fine powder resembling red sand : this is the lupulin in 

 which the whole virtue of the hop resides. 



The preparations of this substance which I have found to be 

 most efficacious are the decoction and tincture. 



The decoction may be made by putting a sufficient quantity 

 of lupulin into a Florence flask, in a sand heat, and filling it three 

 parts full with distilled water ; boil the whole for half an hour, 

 and strain through cotton cloth. The solution thus obtained 

 will be feculent, and does not become clear by repose ; therefore 

 add, while hot, a small quantity of solution of gelatine in hot 

 water; shake the whole together, and let it remain till cold, 

 then filter through paper, and a clear yellow liquid will be 

 obtained. It is intensely, but not unpleasantly bitter ; and when 

 administered in doses of a tea-spoonful at a time in a table 

 spoonful of cold water, is a true stomachic. It is tonic, narcotic, 

 and aromatic. It does not produce constipation of the bowels, 

 as almost all other tonics do. It appears to act entirely on the 

 nervous system, and may be prescribed with manifest advantage 

 in all cases of debility and inaction of the digestive organs 

 where powerful tonics would be injurious. 



The tincture may be prepared by digesting the lupulin in 

 strong and warm alcohol, till saturated, when it must be filtered 

 through paper, and a deep-red solution will be obtained. 



From 40 to 60 minims of this tincture act as an anodyne, and 

 have a powerful effect in allaying great nervous irritation ; and 

 that stupidity which often accompanies the use of opium, is never 

 induced by this medicine. 



I am, Sir, your obedient servant, 



Nicholas Mill. 



Article VII. 



On the Methods of employing the various Tests proposed for 

 detecting the Presence of Arsenic. By R. Phillips, FRS. &c. 



So much has at various times been offered to the public on 

 the subject of ascertaining the presence of arsenic, whether 

 taken from the stomachs, or mixed with the food of those who 

 have fallen victims to its poisonous agency, that some apology 

 may seem requisite for resuming the subject, more especially as 

 it has lately been treated of in so able a manner by Dr. Paris, in 

 his work on Medical Jurisprudence. My object on the present 

 occasion is not to offer any new test for arsenic : what I propose 

 is, to modify some of the methods of using the means already 

 known, and to simplify their application. I shall not enter into 

 any history of the various means which have been proposed, but 



