666

Tables, $c.

f

N

One grain of Calomel is contained inPills of submuriate of quicksilver, i.ond. - grs 4>

One grain of the Grey Oxide of Quicksilver is contained inOintment of the grey oxide of quicksilver. Ed. - grs 4

One grain of the Red Oxide of Quicksilver is contained inOintment of red oxide of quicksilver. Ed. - grs 9

Ointment of nitric-oxide of quicksilver. I.ond. - 9

Ointment of subnitrate of quicksilver. Dub. - 13

One grain of Submuriate of Quicksilver and Ammonia is contained

inOintment of white precipitated quicksilver. Lond. grs IS

One grain of Nitrate of Mercury is contained in

Stronger ointment of nitrate of quicksilver. Ed. grs 5

Ointment of nitrated quicksilver. Lond. Dub. - 5

Milder ointment of nitrate of quicksilver, td. - 13

One grain of Oxymuriate of Mercury is contained inSolution of oxymuriate of quicksilver. Lond. - grs 960

One grain of (jxide of Arsenic is contained in

Solution of Arsenic. Lond.

grs 120

In many instances these proportions are only to be consideredas approximations to the truth, as they are calculated from thequantities of the ingredients taken to form the preparation, notfrom the quantities which exist in it after it is formed The ni-trate of mercury, for example, in the different ointments intowhich it enters, is estimated as equal to the whole quantity ofmercury and nitrous acid employed to form it, although, fromthe very nature of the preparation, it cannot be so much. In thesolutions of opium, the opium is estimated as equal to the wholequantity employed, although not above two-thirds of it be dis-solved. And, lastly, no allowance is made for the loss by evapo-ration.