1 68 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 Surve> r 

 on the areal and economic geology of 

 the Bingham Can}'on 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 dair5' 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 Count5~, 

 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. 



