The Druggists' Circular and Chemical Gazette Volume 47 (Paperback)

This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1903 edition. Excerpt: ...to be expected. Yellow. I. Parts. Potassium bichromate.............. 10 Water............................. 280 II. ' Parts. Potassium bichromate............... 3 Sodium carbonate................... 2 Water.............................. 95 Dissolve the potassium bichromate in the water. add the sodium carbonate and when solution is complete, filter. Blue. I. Parts. Copper sulphate.................... 10 Ammonia water..................... 40 Water............................. 950 II. Parts. Copper sulphate..................... 14 Alum.............................. 14 Sulphuric acid...................... 13 Water............................. 473 Dissolve the acid in the alcohol, add the tincture and dilute until the desired color is produced. II. Parts. Cudbear........................... 10 Water of ammonia................. 40 Water............................. 950 Macerate and filter. Orange. Parts. Potassium bichromate............... 4 Nitric acid......................... 1 Water............................. 120 Amber Parts. Powdered dragon's blood............. 1 Sulphuric acid........................ 4 Water, a sufiicient quantity. Macerate the dragon's blood in the acid for about half an hour or so until solution is complete, and dilute the mixture with distilled or soft water till the desired tint is obtained. Anilin Colors. The anilin colors are convenient for use in liquids for show globes, and although more or less fugitive are still desirable. By a. little attention in the way of adding more color from time to time the liquids can be kept in nice condition. so-0---ii Piano Practice as a Cause of Nervousness. A Berlin physician, believing that excessive practice at the piano is responsible in a measure for the...