320 The Carlxihi/drafcs of the Mam/old Leaf 



and the filtrate and washings deprived of lead by adding solid sodium 

 carbonate: the solution was then diluted to '20W cc. = A. 



* This polarisation refers to the diluted solution after inversion, the dilution being 

 twice that of A. 



Mangold SlaUs. August 26th-27th, 1913. 



The extract was concentrated in vacuo and made up to 100 cc, 

 70 cc. of this being treated with basic lead acetate and washed to 

 nearly -500 cc. The excess of lead was removed by solid NajCOj and 

 solution made to 500 cc. = A. 



