(Review.) Sir,— Tri yours of June 14th. Mr Miller does me the honour to call me, in almost direct lan guage, an ignorant liar. Violence of expression, and bitter insult, is Mr Miller's forte. In a future issue I shall answer that frolicsome genius ; for the present, I shall content myself with taking liberally the first half of his last paragraph, which I am opm pelled to do, as, though written in a sneering, would be sarcastic manner, I have failed to dis cover either wit or humour in it. "The Goldmining of the Future," then, shall be the' subject of this my concluding paper, in so far tis is applicable to Otago, in my view. In the meantime, 1 advise Mr Miller to study the mysteries of carte and tierce, and to have pre pared all the opprobrious epithets he can mus ter, which it will be* only common fairness to allow him to. use, for these are tho only wea pons he can right with ; and as, though I may bo an ignorant liar, I, at least, am no coward, and I do not wish to face an unarmed man. 1 would'also suggest to Mr Miller the propriety of altering the heading of his letters, making it • " The Future of Goldmining in tbe Wakatip," j for apart from the 'Wakatip, Mr Miller's " ex perience in Otago," seems very " limited." I | have endeavoured, bo far as in me lay, to point out some of the hindrances to min ing progress, with suggestions as to their removal. In my opinion, the hindrances to raining progress may shortly be summarised thus : In efficiency of management; the lack of reading and observant habits in tbe ordinary mine*, compelling him to do everything by rule. of thumb; the contemptuous manner in which the miner is treated by business people, aa if he were a dog, causing a olass feeling ; the tenacity with which the miner bangs to old traditions, and ! old ways of working. 