Non-environmental Factors Influencing the Alkaloidal Content and Yield of Latex from the Opium Poppy (Papaver Somniferum) by Annett, Harold E.; Hari Das Sen; and Har Dayal Singh - 1921

Calcutta: Printed and Published for the Imperial Department of Agriculture in India by Thacker, Spink & Co, 1921. First Edition. Memoirs of the Department of Agriculture in India. Chemical Series. vol. 6. no. 1. Investigations on Indian Opium, No. 1. [2], iv, 60, [4]. Folding table and one inserted chart.

A report on a study on the morphine content of poppy latex when various methods of lancing the seed pod and extracting the liquid are used. Annett was one of the first scientists to systematically study morphine yields. Old private library stamp on cover and title page; remnants of pocket on inside back cover. Small loss to the top of the spine, else very good in original printed wrappers.