ON SOME NEW LACTATES. 
51 
The state of the customs shows, that in 1 840 there was 
exported from France 2,161,158 kilogrammes lizaris, which 
represent in value 1,620,869 francs, and 12,114,054 kilo- 
grammes of madder (equal to 12,114,054 francs;) that in 
1841 there were exported 1,896,416 kilogrammes of lizaris 
(equal to 1,422,312 francs,) and 11,840,886 kilogrammes 
madder (equal to 11,840,886 francs.) 
The importation of foreign lizaris and madders is very 
small, on account of the heavy duties. The lizaris chiefly 
come from the Levant by way of Turkey, the Barbary 
States, from Tuscany, the two Sicilies, and from Germany. 
The madders come especially from Holland and Belgium. 
Lon. Chem. Gaz. 
(To be Continued.) 
ART. XV. — ON SOME NEW LACTATES. 
By Professor Lepage. 
Since the year 1841, I have devoted myself to the pre- 
paration of lactic acid on the large scale, and consequently 
of lactate of iron, a salt introduced into therapeutics a few 
years ago, by Profestor Bouillaud. 
I will not here recapitulate the process of extracting lactic 
acid, but will only observe, that for its preparation I em- 
ploy whey, which is found in abundance, and free from 
water, in our neighborhood (Gisors) throughout the sum- 
mer, at a very low price, and that, on the average, I obtain 
from 30 litres of this product (without addition of lactine) — - 
following, for its saturation, the directions given by MM. 
Boutron.Charlard and Fremy — 400 grammes of pure lac- 
late of lime. 
