National Geographic : 1903 Apr
168 THE NATIONAL GEOGRAPHIC MAGAZINE habitants of the world are contained within the Chinese Empire. Even the British Empire with its vast possessions on every continent has 30,000,000 less inhabitants than China. In 1890 Mr E. G. Ravenstein estimated the inhab itants of the earth at 1,487,900,000. Since then the number has increased at least 62, 100,000, making a present total of 1,550,000,000. The British Empire, including India and the recently acquired possessions in South Africa, contains 396,105,000 peo ple; the Russian Empire comes next, with less than one-third as many, 129, 004,000; the United States, including our island possessions, numbers about 89,000,000; France and her colonies have 65,166,000, and the German Em pire 56, 367,000. No other country passes the fifty-million mark. The San Jose Scale, which is so destruc tive to fruit trees in certain sections of the western United States, was the subject of a recent lecture by Charles L. Marlatt before the Biological Society of Washington. Mr Marlatt was sent to Japan and China by the Department of Agriculture to study this pest and to discover some means of checking it. In Japan he found the scale only in those parts where trees had been imported from American nurseries. In China, however, around Tientsin and Pekin and along the northern coast, he found the scale on nearly all the trees, and as it existed in parts where there had been no importations from America, he con cluded that it was a native of China. Further studies convinced him that the scale was held in check by a red-spotted beetle, which ate the insects. Mr Mar latt wisely arranged for the capture of a great many of the red-spotted beetles, which were brought to the United States and distributed among those sections that were specially infested by the scale. It is hoped that the beetles will increase rapidly enough to check the spread of the scale. The Outing of the Mazamas for 1903 will be held at the Three Sisters, a triple peak in Lane County, Oregon, with an elevation of nine thousand feet. Members of the club rendezvous at Portland, leaving that city July 8 and Eugene July 9. The ascent of the peak is planned for July 13 or 14. The party return via Clear Lake and Lebanon (the old Military Road) in time for those who wish to join the Sierra Club in the ascent of Mt Shasta on July 25. It will be re membered that the requirement for admission into the Mazamas is the as cent of at least one snow-capped peak of formidable height. Bingham, Utah, Mining District.-The report of the U. S. Geological Survey on the areal and economic geology of the Bingham Canyon district, Utah, by Arthur Keith and J. M. Boutwell, is now nearing completion. It embodies four main parts, which are devoted to history and development, surface geol ogy, economic geology, and detailed descriptions of mines. Bingham is the oldest camp in the state and the only one in which placer mining has proved successful. A map of the dairy region of New York State has been published by the Geo logical Survey. It is called the Nor wich sheet, and includes the thriving city of Norwich and the towns of Smyrna and Plymouth, as well as por tions of the towns of North Norwich, Sherburne, Otselic, Pharsalia, McDon ough, and Preston. A narrow strip of the southern part of Madison County, including parts of the towns of Hamil ton, Lebanon, and Georgetown appears on the northern part of the sheet. The country is very hilly and the scenery picturesque. The character of the region is so accurately shown on the map that by the contour lines it is easy to pick out the elevation above sea level of any particular house, as well as of the hills about it.