Dr. C.E. Brown-Séquard, M.D., F.R.C.P., F.R.S., London: the casting of the die

In 1858 Dr. Brown-Séquard arrived in London. During his stay there, he was appointed physician at the National Hospital for the Paralysed and Epileptic (now the National Hospital), and was elected Fellow of the Royal College of Physician's of London, as well as Fellow of the Royal society. During this time he also published his 'Course of Lectures on the Physiology and Pathology of the Central Nervous System' an early exposition of what is now know as 'his' syndrome. During his time in London, Dr. Brown-Séquard made many well-known acquaintances, amongst others Charles Darwin, T.H. Huxley, and Louis Pasteur. Three years after his appointment as physician at the National Hospital, he left London. Increasingly, he was to abondon fashionable practice to concentrate on his study of what are now known as the endocrinal glands. In this way, he became a pioneer of the study of endocrinology.     

Yoram Tsafrir,B.A., M.A., PhD (30 January 1938–23 November 2015)

Abstract

The coins attributed to Alexander Jannaeus include a very common type that was apparently struck during the last four years of his 27-year reign, or possibly after his death. The presence or absence of these common coins, at sites where there is a relevant gap in the sequence of the numismatic archaeological finds, can sometimes indicate whether the site was destroyed and abandoned for a period at the end of the second century and/or during the first half of the first century B.C.E. Analysis of this presence or absence can also, in some instances, help to resolve a long-standing question about the attribution of certain other Hasmonean coins to Jannaeus. These contentions are demonstrated through case studies of the numismatic finds at Samaria, Pella, Bethsaida, Khirbet esh-Shuhara, and Gibeon.     

Geophysical Investigations at Teotepec,Mexico (1000 B.C.–A.D. 1000)

Abstract

Recent investigations at the site of Teotepec in the Sierra de los Tuxtlas in southern Veracruz, Mexico explored Middle Formative through Late Classic (1000 B.C.–A.D. 1000) socioeconomic conditions. A central focus was the form and function of the site's distinctive architectural configuration, the Long Plaza Group. During the 2007 and 2008 field seasons, a systematic geophysical survey of Teotepec obtained initial information on the layout, orientation, and possible function of the site's central architectural core. Results from the survey allow for a clear definition of the site's Long Plaza Group in addition to the identification of a possible ball court along its eastern edge. It is also clear that Teotepecans incorporated natural features into their architectural core by placing a pyramid atop a volcanic landform and modifying a natural basalt flow in order to create a level plaza. Finally, the geophysical data indicate significant time depth in architectural construction by suggesting diffirent mound construction techniques, thus underscoring the importance of Teotepec as a persistent place in a region marked by significant population fluctuations in the Formative and Classic periods.     

An English Tree-Ring Chronology,A.D. 404–1216

AN 813-YEAR OAK CHRONOLOGY, A.D. 404–1216, is presented. Its construction has taken three years because of the difficulty of finding suitable Saxon timbers and the need to test the reliability of the dating. Although based on only a few timbers for the period c. A.D. 700, it can be used to date Saxon and medieval timbers whilst more material is found to consolidate that section of the chronology.     

鉴藏翡翠A B D

翡翠乃玉中之王,它主要产自缅甸。近几年,由于高档翡翠产量日渐稀少,价格连年攀升。1999年香港佳士得拍卖公司推出一只种水俱佳的翡翠手镯,以1982万港币的价格成交引起了市场的震动(图1)。在这种巨大利润的诱导下,翡翠市场真假同台,A、B、C货齐登场,充满了风险。翡翠A、B、C是指翡翠的A货、B货、C货。它是一个品质指标,不是等级指标。它是判别天然翡翠还是经过人工物理或化学处理使其内部结构发生变化的翡翠的一个重要品质指标。近年来,随着高新技术的发展,运用现代高科技手段加工制作的翡翠B货、C货大量充斥市场。一些商家在利润的驱…