The breathing becomes shallow, the drug killing, like nearly all neurotic poisons (alcohol, morphia, prussic acid, &c.), by paralysis of the respiratory centre, and the patient dying in a state of coma.
In the meanwhile relief may be afforded by fomentations, and by morphia or chloroform, but if no prospect of the stone escaping into the intestine appears likely, the surgeon will be called upon to remove it by an incision through the gall-bladder, or the bile-duct, or through the intestine at the spot where it is trying to make its escape.
Moissan, contains only a trifling amount of morphia, and the effect produced by it is apparently due, not to that alkaloid, but to such decomposition products as pyrrol, acetone and pyridine and hydropyridine bases.
Browne finds that after smoking " chandoo," containing 8.98% of morphine, 7.63% was left in the dross, so that only 1.35% of morphia was carried over in the smoke or decomposed by the heat.
The prohibition of the general importation of morphia into China except on certain conditions was agreed to by the British government in Act XI.
Turkey opium is principally used in medicine on account of its purity and the large percentage of morphia that it contains, a comparatively small quantity being exported for smoking purposes.
Samples have yielded from 7 to 19% of morphia, and only 2 to 3% of ash, and are therefore of excellent quality.
It has recently been shown, however, that opium grown in the hilly districts of the Himalayas yields 50% more morphia than that of the plains, and that the deficiency of morphia in the Indian drug is due, in some measure, to the long exposure to the air in a semi-liquid state which it undergoes.
Great care is now taken to prevent adulteration, and consequently Persian opium can be obtained nearly as rich in morphia as the Turkish drug - on the average from 9-12%.
Experiments made in England, France, Italy, Switzerland, Greece, Spain, Germany, and even in Sweden, prove that opium as rich in morphia as that of Eastern countries can be produced in Europe.
The juice yields about one-fourth of its weight of opium, and the percentage of morphia varies according to the variety of poppy used, the purple one giving the best results.
Some specimens of French opium have been found by Guibourt to yield 22.8% of morphia, being the highest percentage observed as' yet in any opium.
It was found that the method yielding the best results was to make incisions in the poppy-heads soon after sunrise, to collect the juice with the finger immediately after incision and evaporate it as speedily as possible, the colour of the opium being lighter and the percentage of morphia greater than when the juice was allowed to dry on the plant.
Flint in 1873 yielded 74% of morphia, equal to to% in perfectly-dried opium.
Soc. Morphine, or morphia, crystallizes in prisms with one molecule of water; it is soluble in woo parts of cold water and in 160 of boiling water, and may be crystallized from alcohol; it is almost insoluble in ether and chloroform.