THE ANALYST. 385 APPARATUS. ‘‘ Spray ’’ Absorber. Romuald Nowicki. (Chem. Zeit., 1904, liv., 644.)-The apparatus has a double container, the two chambers of which may be filled with different absorbing liquids. The inlet tube reaches almost to the bottom of the vessel, and finishes with a jet bent upwards, and inserted in the end of a vertical spiral tube. From this jet, under the influence of suction, the gas is “sprayed” through the spiral, creating and carrying with it a current of the absorbent. The gas is thus constantly brought in contact with fresh solution, and a correspondingly increased efficiency is obtained. Made by Messrs. Rohrbeck’s SUCS., Vienna. H. A. T. New U-Tube. Romuald Nowicki. (Chem. Zed., 1904, lii., 622.)--In this form of U-tube the connecting-tubes are not attached to the outer, but to the inner, sides of the respective limbs.At the point of contact they are bent out at right angles, and there fused together. Owing to their lateral projection, the U-tube can be laid OD the balance-pan. The tube is considerably stiffened, and a series can be built up in much smaller space than with the usual form. H. A. T. Obtainable from W. J. Rohrbeck’s Nachf., Vienna. 1 2 3 New Pipette. Carl Meyer. (Chem. Zeit., 1904, lvi., 665.) -A new pipette, consisting of a graduated outer tube (Fig. 1) containing a glass rod, the lower end of which is ground into the outlet of the outer tube. Tube and rod are joined at the top by a closely-fitting piece of rubber tubing. With the rod raised, the pipette can be filled by suction at the lateral tube, and the desired quantity run out by slightly pressing the rubber tube, thereby lifting the rod.Obtainable from R. Kirchner and Co., Ilmenau. H. A. T. Laboratory Apparatus for Steam Distilla- tion. E. Pozzi-Escot. (BUZZ. SOC. Chim., 1904, 932; through Chem. Zeit. Rep., 1904, xix., 217.) -This apparatus consists of a double flask, the construction of which is obvious from the figure. The inner container is about 300 millimetres in length; the outer flask is of the usual 1-litre size. acids in fermented liquids. It is especially suitable for the determination of volatile H. A. T. A386 THE ANALYST. New Laboratory Apparatus. W. Pip. (Chevz. Zeit., 1904, lxx., 818.)- To avoid using various-sized rubber corks when filtering with flasks of different sizes - under reduced pressure, the author uses a stout " washer " or pierced disc of stout rubber.Placed on the neck of the flask, and the funnel loosely inserted in the central hole, the pressure caused by the partial vacuum in the flask is quite sufficient to insure an air- tight joint. For filtering excessively hygro- scopic substances a double funnel is suggested. The top of this funnel is enclosed, with the exception of a central aperture sufficiently large to admit of the passage of the filter-paper. Connected by a rubber cork to this is a separating funnel, fitted at the top with an ordinary drying tube. The liquid to be filtered is placed in the L-. -1_1_1_ 2 - L1_.__ _ 1 _ - 1 1 1 1 '1 ' I 1 m, I . _ I > separar;or, wmcn is men ciosea ~y me arying mme. ' m e apparatus is made by Messrs. Max Kaehler, of Martini, Berlin, W. H. A. T. Special Flask for the Preparation of Standard Solutions. A. Goske. (Chem. Zeit., 1904, lxviii., 795.)-The long neck of the litre flask is graduated in C.C. from 920 C.C. to 1,000 c.c., thus simpli- fying the dilution of slightly concentrated standard solutions. I t renders unnecessary the use of 8 separate vessel for the original preparation of the solution, or of measuring tubes, etc. The apparatus is made in 1, 2, and 5 litre sizes by Messrs. H. Goeckel, Berlin, W. H. A. T.