Mr. Davies found that this bottle “contained in solid and liquid perhaps two grains--a grain at all events.” Now arsenic can be dissolved in water by two processes. In cold water by shaking it constantly for several hours (and the strongest solution that can be obtained by the cold-water process is a one-per-cent. solution, which is no stronger than the ordinary Fowler’s solution as sold in the shops). That is called a “saturated solution” by the cold-water process. A solution of three or even four per cent. can be obtained with boiling water, but only when the water is kept on the constant boil for several hours; and that is also called a “saturated solution,” so that the phrase “saturated solution” may mean either a weak solution of one per cent., such as is gained by the cold-water process, or a stronger solution of three per cent. by the boiling-water process, and Mr. Justice Stephen _misdirected_ the jury as to the meaning of the phrase “saturated solution.” He should have told them that a “saturated solution” of arsenic is one which has by any particular process taken up as much arsenic and _retained it in solution_ as is possible by that particular process, and that it might consequently be either a weak or a stronger solution, according as it has been dissolved by the cold-water or boiling-water process, by shaking for hours or boiling for hours. The questions put to the jury by Mr. Justice Stephen upon the interpretation of the phrase “saturated solution” which he gave, namely, “How is it to be used?” “Who is wanting such a quantity of _strong_ solution of arsenic?” are _misdirections_. MR. CLAYTON’S EXPERIMENTS Counsel are referred to experiments made with solutions of arsenic by Mr. E. Godwin Clayton, of the firm of Hassall & Clayton. From these it will be seen that by the experiment there marked B, where the arsenic was shaken at intervals of twenty minutes for six hours, the result shows that it would require 186½ grains of water to carry half a grain of arsenic. And that by experiment C, which is the strongest possible solution by the cold-water process, namely, one-per-cent. strength (equal to Fowler’s solution), it would require 50 grains of water to carry half a grain, but to obtain this the arsenic has to be shaken with cold water _at frequent intervals for four days_.