This section is from the book "A Practitioner's Handbook Of Materia Medica And Therapeutics", by Thos. S. Blair. Also available from Amazon: A Practitioner's handbook of Materia Medica and Therapeutics.
Homeopathic Mother Tinctures are all designated by the Greek letter theta (@). The strict homeopath insists upon the elaborate rules of Hahnemann, as instanced in the "American Homeopathic Pharmacopoeia," by which the expressed juice of the fresh plant is combined with alcohol wherever possible, although some of these tinctures are prepared by maceration similarly to our own official tinctures and commonly in the same or greater relative proportions of plant to alcohol, so that these homeopathic green plant mother tinctures are very active preparations. The weakest of them represent one part in eleven, belladonna being the principal one of this strength. A large number of poisonous substances, such as aconite, are one part in seven. Care must be taken to employ them in smaller doses than the U. S. P. tinctures. Many less active ones are made in greater concentration. A few, as instanced especially by ipecac and nux vomica, are not made from the green plant.
The homoeopathic profession in the United States is divided in sentiment over a good many matters pertaining to their own school, and a large number insist upon employing their own tinctures more or less for their physiologic actions. This has resulted in the "Homeopathic Pharmacopoeia of the United States." In this work the amount of moisture in the green plant is always estimated, and the tinctures are all made as representing one part in ten of the dried herb. The green plant and pure alcohol are used and the proportions of plant and alcohol vary, since some plants are more succulent than are others. The finished product, it is readily seen, is identical in drug value to our own tinctures, only made from the recent plant in nearly every instance. A high-class homoeopathic pharmacist is almost fanatical in his care in making mother tinctures; consequently, these tinctures are really of the very highest order of excellence and must be given in even smaller doses than our own one-in-ten tinctures because of their high physiologic activity due to using the green plant, most thorough exhaustion of the drug, and the employment of full strength alcohol in tincturing.
These latter one-in-ten tinctures are the strength always considered in this work when homoeopathic mother tinctures are spoken of in the Materia Medica section. Homoeopaths have a penchant for using highly poisonous substances, in dilutions of course, and the tinctures from which these dilutions are made are highly toxic. Some of them are not familiar to the regular school, such as Agaricus muscarius, .Ethusa, Ailanthus, etc. It is wise to try no experiments with these comparatively unknown substances, and the doses given in this book should not often be exceeded, so far as concerns these toxic agents.