ELL .METAL AND UK, A- I. 75 



in various eye diseases. 1 Auother oollyrium prepared with lead 

 is as follows. To one part of purified and melted lead, add an 

 equal portion of mercury and two parts of galena, rub them all 

 together and reduce to powder. Now add camphor, equal in 

 weight to one* tenth part of the mass and mix intimately. This 

 preparation is said to be useful in eye diseases. 2 From the 

 composition and uses of lead and galena above described it would 

 sesm that by the term surma the Hindus meant sulphide of lead, 

 and not sulphide of antimony as is generally supposed. 



BELL METAL AND BRASS. 



Bell metal, (51TOT, Kdnsya), as used in medicine, is an alloy of 

 copper and tin. Brass, ( farf^, Ptttala ) is an alloy of copper and 

 zinc. They are sometimes used in combination with other metals, 

 and are regarded as tonic and alterative. They are purified and 

 reduced to powder in the same way as copper. The following is 

 an example of a preparation containing bell metal. 



Nitydnanda rasa. 9 Take of mercury, prepared copper, iron, 

 bell-metal and tin, purified orpiment, sulphate of copper and 



1- Tfatfrtf ^ Mfa^r<i fH"fT*«: i VH<Nw*M<*i: *H*t fa*' 



**w; ii 



stnnn: i 



-• *re tr ?*r ^ nf q$ ftfafafa i w*ra»f j^t^r" s 5 **^ 



• wt'w I 



3. fronts; I f? %W^ mi <9?f i«ra? ^ew*^ I ^W to" 

 *>*•** *N fqt c( j ^q< *qur«l«r" **»ffaTfiiinr ^ I H*1to wigiw 



