From the above results the following table, showing the average loss on each article, has been calculated:―
---------------------------+------------- { 228} | Average | per centage | of Loss. +------------- SALTS, CRYSTALINE | SUBSTANCES, &c. | Acid, Tartaric | 1.50 Cobalt (Arsenic) | 1.63 Aluminæ et Potassæ, | 5.76 sulphat. (calcined) | Ammoniæ Muriat. | 8.41 Potassæ Nitrat. | 2.80 ——— Sulphat. | 2.37 ——— Bi-tartrat. | .45 Sodæ Bi-Borat. | 15.45 Soap, Olive Oil, white | 33.33 VEGETABLE SUBSTANCES. | BARKS. | Cannella Alba | 4.26 Cassia | 5.20 Cinchona Maracaibo | 4.25 ——— Flava (Calisaya) | 4.75 ——— Rubra | 4.58 Mezerion | 7.81 Myrica Cerifera | 3.98 Prinos Verticill. | 4.16 Prunus Virginian. | 4.00 BERRIES. | Capsicum | 3.81 Cubeba | 3.81 GUMS AND RESINS. | Aloes Soct. | 6.25 Acacia | 3.78 Catechu | 4.58 Euphorbium | 3.84 Gambogia | 4.36 Kino | 3.60 Mastiche | 8.47 Myrrha | 3.15 Opium | 6.61 Sanguis Draconis | 5.00 Scammonium Lachrym | 5.22 Tragacantha | 4.64 Spegelia Mariland. | 4.76 HERBS. | Aconite | 5.26 Cicuta | 5.71 Digitalis | 4.04 Lobelia | 4.49 Hyosciamus | 8.75 FLOWERS. | Arnica | 5.88 Caryoph. | 4.03 Humulus | 4.14 FRUIT. | Colocynth. | 67.23 LEAVES. | Buchu | .96 Senna Alex. | 4.63 ——— Ind. | 3.96 Uva Ursi | 4.35 ROOTS. | Calamus | 7.41 Cimicituga Racemosa | 4.34 Colomba | 3.47 Curcuma ground, | 3.08 Gentian. ground, | 2.46 ——— powdered | 2.20 Glyyrrh. | 4.06 Helleborus | 4.31 Hydrastis Canad. | 5.20 Iclodes Fœtidus | 4.00 Inula | 4.00 Ipecacuanha | 4.10 Iris Flor. | 3.34 Jalap | 4.00 Rheum Indicum | 3.91 ——— Russic. | 4.17 Sanguinaria | 3.96 Salep | 3.84 Scilla | 9.43 Senega | 5.08 Serpentaria | 4.44 Lobelia | 7.46 { 229} | Valerian. | 4.24 Zingib. Jam. | 4.51 SEEDS. | Anisum | 3.60 Cardamom. | 4.92 Colchicum | 4.05 Coriandrum | 2.02 Linum (ground,) | .87 Nux Vomica | 3.79 SUNDRIES. | Cantharis. | 4.31 Ext. Coloc. comp. | 4.54 Ext. Glyyrrh. | 6.25 Ext. Jalap | 4.87 Galla | 4.34 Secale Cornutum | 4.39
ON THE PREPARATIONS OF IRON USED IN MEDICINE.
The preparations of iron being among the most important articles of the Pharmacopœia, it is surprising that so little attention is paid by many druggists and pharmaceutists to the preparation and preservation of these articles in a pure state. The greater part of the preparations of iron to be found in the shops are far from having the chemical composition indicated by their labels, and in fact, few of the formulas given in any of the Pharmacopœias for preparations of iron, are capable of giving even tolerably pure products.