Southern Medical and Surgical Journal - Georgia Regents University

1S59.] Climate to tJte Consumptive, dc. 735ous Territories, and also under the general consideration andcomparisons of it with the eastern slope, and the southern ofEurope. The variability of the coast here is greater than thatof California.Along the coast the rate of advance from monthto month is much more gradual than in the interior—the differencesof alternate months, being scarcely greater than thoseof the succeeding months. At Fort Orford, on the southernpart of this coast,the least difference in this monthly advance isnoted in the passage from March to April, and the greatest fromMay to June. At Fort Vancouver, an intermediate post in thenorth of the Willamette Valley, these observations are reversed,the greatest difference being from March to April, and the leastfrom May to June.Greater uniformity of advance, for the entireseason, as far as the record at present extends, although quiteextreme in degree, is found at Fort Dalles, on the Columbia,in the interior, than to the west of the Cascade Eange. Andcompared with Fort Defiance, its analogue in the territories tothe south, it is both more mild and less extreme ;for the meanmonthly advance there is 8°.56, whilst here it is only 6°.88,But the spring features of the coast, are placed in decidedly themost interesting view, when contrasted with correspondingones for the coast lower down. Making due allowance for thedifference of latitude, the accessibility of each to oceanic influencesis the same, therefore the differing results at each of theplaces indicate distinctive differences in the character of thoseoceanic influences. On the coast of California, both at SanFrancisco and at Fort Humboldt, some distance farthernorthward,there occurs in the passage from April to May anactualretreat in the position of the mean temperatures, instead of anadvance, which we have attributed to an increasing intensityof action of certain cold currents of the ocean, found prevailingat that time. At Fort Orford, ho vrever, a progressive advanceis observed, which can only be brought about by a diminishedeffect of those controlling sea-temperatures. Hence that degreeof refrigeration which is observed along the former coast isexperienced here, being only subject to thenotordinary influencesof sea-coast localities generally. This, of itself, is collateralproof of the position we have assumed inregard to the courseand direction of the cold waters off this coast, for from Fort