In the Teji-Mandi transactions, which have been very carefully examined by Beaman J., in Jessiram Jugannath v. Tulsidas Damodar, 16 Ind Cas 576 (Bom) (D), one party buys what is known as a double option. For this he pays a certain premium say Rs. 20 per Rs. 100. On the settling day the buyer has the right to declare himself either a seller or a buyer.