Read it through once

Effects of opium--The poppy-plant and its latex--Work of the opium-gatherer--Where the opium poppy is grown--Haschisch of the Count of Monte Cristo--Heckling, scotching, and retting--Hempseed and bhang--Users of haschisch--Use of india-rubber--Why plants produce rubber--With the Indians in Nicaragua--The Congo Free State--Scarcity of rubber--Columbus and Torquemada--Macintosh--Gutta-percha 301