The Origin of the California Coast Mountains
MARCH 15, 1884. SCIENTIFIC AMERICAN SUPPLEMENT, No. 428. 6833 tbat temperature for half an bour the shade will then be was certain that tbe results by tbe two modes of measurecompletely fixed. ment seldom precisely agreed. By adding cbrysoine we obtained advantageously a shade A third mode of obtaining comparable results in testing Lime water is only recommended in case of excessive acidity of tbe gastric juice. Milk can be rendered more digestihle by pepsin or pan· crealine, hut bas a
... hut bas a disagreeable odor and a bitter taste that sugar cannot hide. Alcobol diluted, as for instance cognac, helps digestion, tbougb it is not known exactly how, unless it stimulates the secretion of the glands. THE ORIGIN OF THE CALIFORNIA COAST MOUNTAINS. wbicb can replace tbat of ma(lder; tbe' econllmy in dyeing by tension would be to nse very long test· pieces, and to re being about 50 per cent. Spots of ink and of iron· mould, ject the pereentagesof stretchillgnear to thepoint of fracture. whicb must be removed by oxalic acid before entering tbe But tbis would be expensive, and often inconvenient or even goods into tbe madder batb, as it strikes a bhwk with the impracticable, and would not always give accumte results; least trace of iron, cauoe little trouble witb roccelline, as for a long bar, wben stretcbed to breaking, often began to salts of iron bave no effect on it. As iudicated above for draw down simultaneously in several parts of its length. Tbe cbrysoine, other sbades may be produced by substituting fO L ' use of cumparfLtively sbort test·pieces of some standard forms it indigo-carmine, napbtbol-yellow, or naphthol-omnge, ex-seemed tbus to be the be"t metbod of making tests of the cept that when indigo-carmine is Llsed it should be added to quality of bars and plates of ductile metal tbat could be em the batb at tbe close of the process, and that sulphuric acid ployed. and sulphate of soda sbould alw be added. Tbe sbades In the testing of plates, tl,e length of 8 incbes was tbe OBSERVINGin your issue of Jan. 19th tbere is a difference resi<t exposure to tbe air as well as tbose of cochineal, and only dimension of test-piece that appeared to be generally of opinion on glacial action, and proof being always obscured incomparahly better tban thOde of archil. Tbese two are adopted; and as it was very desirable tbat tbe standard and doubtful-nothing positive being adduced-I heg to made yellowisb by acids, and reddisb-violet by alkalies. Roc-i forms for cylindrical and for flat test-pieces should be sucb intrude upon yoU my crude personal opinions on tbe early celline, on tbe conlrary, preserves all its fresbness of color that the same metal might give tbe same percentage of geological aLLlT climatic condition of our planet. Tilis earth in tile presence of these reagents, while its cost is 80 per stretcbing, whetber tested in the one sbape or in the other, is colder to-day internally and atmospherically tban at any cent. less than tbat of cocbineal, and 40 per cent. lees thau tbis length. witb a convenient width and!tn average thickness, time of it� existence as a satellite to this our central sun. tbat of arcbil. For dyeing various grades of woolen upbol-might well be taken as the standard fnrm, and that for cylin-Tbe earth's poles at one time were tropical and the equator stery goods, in which reds and kindred warm tints prevail, drical test·pieces be determined by experiment, so as to corwas too bot to be inbabitable; that animal life first started in and when solidity of tbe dye is indispensable and cbeapness respond with it.