The indications that I myself have noticed as belonging to _Lemna_ are either a putrid smell in the nose or a loss of all sense of smell and a putrid taste in the mouth, especially on rising in the morning, with a general foulness of the mouth, due apparently to the dropping down of impure material from the post-nasal region. Along with this there sometimes seems to prevail a disposition to "noisy diarrhoea." Dr. Burnett has noticed that _Lemna_ patients have their nasal symptoms aggravated in damp and rainy weather, and I have to some extent confirmed this observation. I hope on some future occasion to return to the subject of _Lemna_; it is in every way well worthy of being prosecuted further. Thus, for example, a lady patient, æt. fifty-eight, suffering from pains flitting about her head and legs, with pains in her eyes during heavy rain, and in whom drowsiness by day and restless sleep at night existed, had all these symptoms removed by a single dose of _Lemna_, and the pallid, dullish, sickly look in her face changed to a complexion that was natural and healthy. The truth would seem to be that _Lemna's_ symptoms are specially aggravated in heavy rains; _Calendula's_, when heavy clouds are about; _Rhododendron's_, in thunder storms, and _Dulcamara's_, in damp surroundings and in foggy weather. (In 1895 Dr. Thomas L. Shearer contributed the following concerning the remedy to the _Homoeopathic Eye, Ear and Throat Journal_): _Lemna minor_ where the crusts and the muco-purulent discharge are very abundant with fetor (in rhinitis atrophics). Its action is wonderful, but it must not be administered in too low a dilution, as it then produces a sensation of intense dryness in the pharynx and the larynx. Possibly if it were exhibited in a much higher dilution it would be applicable to cases which have only a slight amount of discharge. It seems best to stop the remedy as soon as its action upon the secretions is marked, and then to wait a while before returning to its further employment. Dr. Cooper, of London, was, I believe, the first to investigate the action of _Lemna minor_ upon the upper air passages, but I do not think that he had tried it in cases of atrophic rhinitis. There is a great future for this new addition to our therapeutic resources, and it certainly deserves further investigation. It modifies the secretions to such an extent that we can more readily improve the condition of the nasal chambers with the aid of local measures. Whether it has the power to prevent or even retard the actual process of atrophy remains to be seen. LEVICO. PREPARATION.--Dilutions made from the mineral water or triturations from the residue obtained by evaporation of the water. (Dr. Burnett has called the attention of the profession to this water in his books. The following concerning its constituents is from _The Therapist_, a London journal):