Umbilical cord from and contains remnants of the yolk sac and allantois. It forms by the fifth week of development, replacing the yolk sac as the source of nutrients for the embryo. The cord is not directly connected to the mother's circulatory system, but instead joins the placenta, which transfers materials to and from the maternal blood without allowing direct mixing. The length of the umbilical cord is approximately equal to the crown-rump length of the fetus throughout pregnancy. The umbilical cord in a full term neonate is usually about 50 centimeters (20 in) long and about 2 centimeters (0.75 in) in
The Authors' Circular of Journalism (which prepared students for the examinations of the Institute of Journalists was printed in each issue, giving insight into the practical art of journalism as it was then conceived. Early in 1898, Charles Norris, secretary of the English School of Journalism, who was intimately involved in the production of its journal, died which destabilised the publication and its continuation. The Authors' Circular The Authors' Circular was a short-lived monthly publication of 16 pages running from January to April 1898. It was subtitled the "Official Organ of the English School of Journalism". It aimed to "foster business relations between