Charles R. Botsford, 55 Liberty Street, New York, wants to belong to some amateur photograph club. Will the secretary of any such club desiring a bright member, either active or corresponding, write him?--John Desmond asks if the cruisers off the Cuban coast burn hard or soft coal. We presume his query is prompted by the fact that soft coal makes a black smoke that can be seen a long distance, because it ascends high above the water the instant it leaves the smoke-stack. When the Cuban trouble first began, the Spanish cruisers burned Cuban coal, and their smoke was seen plainly. The Spaniards noticed, however, that the vessels used by the insurgents to convey ammunition from Florida made almost no smoke at all. They inquired the reason, and soon began sending to Philadelphia for anthracite coal. So now the Spanish cruisers burn hard coal, and do not show themselves to the enemy hours before the hulls of their ships heave into view. [Illustration: STAMPS] This Department is conducted in the interest of stamp and coin collectors, and the Editor will be pleased to answer any question on these subjects so far as possible. Correspondents should address Editor Stamp Department. The readers of the ROUND TABLE Stamp Column who intend going to Europe next summer will find the London Philatelic Exhibition very interesting. The exhibition opens July 22, and closes August 5. The stamps will be exhibited in classes: 1. Stamps of Great Britain; 2. Of British colonies; 3. Of Europe; 4. Of Asia and Africa; 5. Of America, etc. Each of these classes will be subdivided, and twelve gold, forty-three silver, and forty-eight bronze medals will be awarded to the best collections. In addition as special prizes, nine gold, nineteen silver, and ten bronze medals; besides a large number of additional medals and other prizes are offered by individual members for special exhibits. A few of the leading collectors in America intend competing for some of the prizes. It is estimated that stamps to the value of $2,000,000 will be on exhibition. F. LOWE.--I congratulate you on the possession of the Tobago one shilling, in color of the sixpence. I referred to this stamp in the ROUND TABLE for November 10, and erroneously stated that the stamp was the first of a new issue. It turns out to be an error of the first water. It is quoted at all kinds of prices, from $5 upward. The chances are that a large block of them is in the hands of insiders. If so, $5 is a fair price. W. W. STOCKTON.--The word Cave on your Ceylon stamp is a portion of the name of a firm. It is frequently found on stamps of the Straits Settlements. E. LEROY POND, Terryville, Conn., wants to exchange U. S. stamps for those of Siam, Salvador, China, etc.