San Franciscan climate is breezy, damp and at times chilling; often depressing to the weakly, but a splendid tonic to others.
We need the tonic of wildness--to wade sometimes in marshes where the bittern and the meadow-hen lurk, and hear the booming of the snipe; to smell the whispering sedge where only some wilder and more solitary fowl builds her nest, and the mink crawls with its belly close to the ground.
A form of contraction intermediate in character between the tonic and the rhythmic is met in the auricle of the heart of the toad.
Coincidently with the persistence of the tonic contraction, the higher and volitional centres seem to lie under a spell of inhibition; their action, which would complete or cut short the posture-spasm, rests in abeyance.
In the first place, the ridiculous and discreditable incident of the beating had time to blow over; in the second, England was a very favourable place for Frenchmen of note to pick up guineas; in the third, and most important of all, his contact with a people then far more different in every conceivable way from their neighbours than any two peoples of Europe are different now, acted as a sovereign tonic and stimulant en his intellect and literary faculty.
The following is Bach's fullest orchestra: the string-band, consisting (as at the present day) of violins in two parts, violas, violoncellos, doubled (where the contrary is not indicated) by double basses; the wind instruments (generally one to each part, as the string-band was never large)-2 flutes, 2 or 3 oboes, or oboe d'amore (a lower-pitched and gentler type), taille or oboe da caccia (some kind of alto oboe corresponding to the cor anglais), bassoon, generally doubling the string basses, 2 horns, with parts needing much greater practice in high notes than is customary to-day, 3 (occasionally 4) trumpets, of which at least the first 2 were played by players especially trained to produce much higher notes than are compatible with the power to produce the lower notes (the high players were called Clarin-Blaser; and the others Principal-Blaser); a pair of kettle-drums, tuned to the tonic and dominant of the piece.
Its most effective use, however, is as a nerve tonic in paralysis agitans, locomotor ataxia, impotence and nervous exhaustion.
The powdered bark is sometimes given to horses as a vermifuge; it possesses likewise tonic and febrifugal properties, containing a considerable amount of salicin.
The kat plant, a medicinal herb which has a tonic quality, is largely grown in the Harrar province.
Added to the greater force of cardiac contraction is a permanent tonic contraction of the organ, so that its internal capacity is reduced.