... The aqueous portion was acidified (ice bath) with concd. hydrochloric acid to p H 2. The :rcidic,reac- tion mixture was evaporated to dryness :tnd the residue treated wit,h hot coned. hydrochloric acid. ... g k Page 4. 864 NOTES VOl. 5 v' v Page 5. July, 1962 NOTES 865 ...