after 1860’s the railway systems has started to be used in urban transportation in the world. however, especially after the 1950’s, automobile usage has been increased quickly. thus the dense of transportation has started to move from railway systems to the ones with rubber tire vehicles in istanbul. traffic density in urban transportation has started to be experienced since 1950 with the incre...

The 1950 amendments to the Social Security Act made substantial changes in old-age and survivors insurance coverage and benefits. Of the new provisions that were effective September 1950, one—the increase in current insurance benefits—had an almost immediate effect on public assistance caseloads and expenditures, as reported in the following pages. A later article will summarize the impact on t...

The genus Mesosaimia Breuning, 1938 is reviewed. The genus Trichipocregyes Breuning, 1950 is synonymized with Mesosaimia. Trichomesosa similis Breuning, 1950 is transferred to Mesosaimia. A new species, M. wakaharai sp. nov., is described from Laos. Four species, M. robusta Breuning, 1938, M. mausoni (Breuning, 1950) comb. nov., M. similis (Breuning) comb. nov. and M. wakaharai sp. nov., are in...

Poliomyelitis has been endemic in England and Wales since its notification was made compulsory in 1912, but prior to 1947 its incidence was, with the exception of three years, of the nature of a sporadic disease with a seasonal rise rather than that of an epidemic disease. This was in contrast to the experience of the United States and some continental countries, where large epidemics had occur...

The National Association for the Advancement of Colored People is an organization of half a million Americans of every race, creed and color, working for the attainment of a society of equality, security and freedom for all. Affiliated with and under the direction of the National Chapter are 59 College Chapters. Starting the Conference were reports from each of the Chapters. This was followed b...