The facts were shortly as follow :-The plaintiff was a miller and wheat buyer, and in the season 1906-1907, and again in the season 1907-1908 he consigned wheat to the society for storage at Darling Island. The terms on which the society received the wheat were set out in a circular issued by them and were as follow -
"1. Wheat to be sent by farmers to the society, and stored chiefly at Darling Island, free of storage charges.
"2. Wheat, when sold, to bear a net commission of 21 per cent. "3. On receipt of wheat from the farmer a statement is to be forwarded to him informing him of the grade. If objection is taken by the farmer the grading is to be checked by an outside expert.
'4 Each consignor to agree that the society shall have the option of selling each month one-eighth of each consignment. If this one-eighth is not sold the first month, the arrangement shall be cumulative, the society having the right to sell one-fourth in the second month, and SO on, the whole parcel being sold in eight months.
5. The foregoing arrangement shall not, of course, preclude the consignor from instructing the society to sell at any time, or giving the society a reserved price at which it can sell as opportunity offers.
"6. The General Manager, in deciding upon a price, from time to time shall, as much as possible, consult the Board, especially the members of the Board directly interested in the wheat industry.
'7. The society will arrange to have the advantage of special cables from London every week, setting out the actual condition of the market and the prospects of the future, as far as they can be gauged by the best authority. These will be available at all times for consignors, and reports will also be sent periodically, advising consignors of interesting matters connected with the wheat markets.
"8. Liberal advances will be made on all consignments, the advances to be based upon market rates ruling, and at bank rate of interest, viz., 5 per cent.
'9. Special Board meetings of directors interested in wheat