The malariology centenary (1898-1998). 1898

This editorial note presents the journal initiative to celebrate the Malariology Centenary. It includes the reprint of the first annual report of the Society for Malaria Studies (founded in 1898), presented by Angelo Celli on December 3rd, 1898, to the first meeting of the Society and published in the Journal of the Royal Italian Society of Hygiene (volume 20, issue 12, 31st December 1898). The text is followed by explanatory footnotes and relevant references. An exhaustive historical essai, including the english version of the Celli's report, is scheduled to appear as supplement to volume 41, and the same volume will host the contributions issued from the international conference. "The malaria challenge after one hundred years of malariology", held in Roma at the Accademia Nazionale dei Lincei on November 16-19, 1998.     

OBITUARY JOHN HESLOP-HARRISON (1920-1998)

The passing of Jack Heslop-Harrison marks the end of an outstandinginternational scientific career and represents the loss of adistinguished contemporary British botanist. British by birthand by acclaim in that he held Fellowships of the Royal Societyand the Royal Society of Edinburgh, together with Membershipof the Royal Irish Academy. International, in so far as hismany career appointments were divided between Great Britainand the United States and involved scientific colleagues frommany nations.Copyright 1998 Annals of Botany Company.     

Double fertilization in flowering plants: 1898-2008

A short review of the results of investigations in the field of plant embryology in vivo and in vitro which are directly connected with the discovery of double fertilization in flowering plants by S.G. Navashin is presented. These results have been obtained by using the methods of electron and fluorescence microscopy, cytophotometry, cultures of isolated ovules, sperms, eggs, and embryo sac central cells. The question on an origin of the female gametophyte of flowering plants, double fertilization, and endosperm are discussed. It is emphasized that the progress in this field is connected mostly with the study of molecular processes which control the development and functioning of a female gametophyte and sporophyte at the early stages of ontogenesis.     

纪念蒋英教授

蒋英教授是著名的植物分类学家。他从事中国夹竹桃科、萝藦科、番荔枝科植物的专门研究和教育事业有五十四年历史,为祖国科学事业奋斗一生,作出了重大贡献。本文详细地介绍了他的生平、艰苦创业的经过、严谨治学精神、培养人才的经验,并总结了他一生的科研成就和八十多篇著作名录,供后人参考。     

Birth seasonality in the early Spanish-Mexican colonists of California (1769-1898)

The pattern of birth seasonality in California's early Spanish-Mexican colonists between 1769 and 1898 was reconstructed using genealogical data for progeny of 657 marriages. The monthly distribution of the 3,824 births in this sample shows a strong seasonal pattern, with spring and fall peaks (corresponding to peaks in conceptions during July and February) and a low point in October. This seasonal reproductive pattern is the result of a complicated set of interactions among environmental, physiological, and cultural variables. California's strongly developed winter rainfall pattern and the 19th-century agricultural cycle clearly influenced the seasonal pattern of marriages and births in this agrarian society. Several historical processes interacted with these environmental and economic factors to transform the seasonal birth pattern of the early colonists. Through time the birth pattern becomes less variable and the birth maximum shifts from spring to early winter. This appears to be, at least in part, a result of changes in labor patterns and an increase in average parity. These data suggest a multifactorial explanation for birth seasonality, in which the timing of conceptions and births is influenced by both environmental and socioeconomic factors.