764 General Notes. [ November, 
recently held in London to consider the connection of the 
Egyptian telegraph lines now reaching Khartum with those 
existing at Kimberley in the extreme south of Africa. The 
Central African Telegraph Company are already making arrange- 
ments to run a line from the Transvaal to Zanzibar. 
Osituary.—Dr. August Heinrich Petermann died at Gotha, on 
the 26th of September. This very eminent geographer was born 
at Bleicherode, a village of Prussian Saxony, April 18, 1822. 
Educated at the Potsdam Geographical Institute, founded by 
Berghaus, the well known author of the “ Physical Atlas,” he 
afterwards became his secretary and assistant in preparing the 
maps for his great work, and also for that of Alexander von 
Humboldt on Central Asia. Removing to Edinburgh in 1845, 
and patia to London, he aided largely i in the bringing out of 
Dr. A. K Johnston’s “ Physical Atlas” and other geographical 
works, took an active part in the proceedings of the Royal Geo- 
graphical Society, and was instrumental in sending Drs. Barth, 
Overweg and Vogel to Central Africa. In 1854, he under- 
took the charge of “the great geographical establishment of Fus- 
tus Perthes, at Gotha, where he remained until his death, found- 
ing and conducting with great success the Mittheilungen aus 
` Fustus Perthes Geographischer Anstalt über Wichtige neue Erfors- 
chungen auf demGesammtgebiete der Geographie, a monthly periodi- 
cal whose volumes constitute an almost complete record of the 
progress of geographical discovery since that date, illustrated by 
a vast number of maps and plans. The first and ‘second North 
German Expeditions to the North Pole were sent out under his 
direction and material support. The new edition of Stieler’s 
“ Hand-Atlas” (1875), contains many maps drawn by him, 
including the best, for their size, that have yet appeared of the 
western “portion of the United States. The loss, at a compara- 
tively early age, of one whose untiring industry and enthusiastic 
devotion has so dete aided in extending the bounds of civiliza- 
tion, is deeply deplore 
i MICROSCOPY .! 
Natronar Microscopicat Concress (Continued).—* The Migra- 
tion of Leucocytes,” by Dr. W. T. Belfield, of Chicago. In examin- 
ing microscopic sections of the kidneys of persons who had died 
of pneumonia, the author had found the intertubular tissue crowd- 
-~ ed with an abundance of cells having all the appearance of white 
blood corpuscles. As other appearances of renal inflammation were 
wanting, and there had been no previous history of renal disease, 
it was judged that the retardation of the blood current incident to 
_ the pneumonia had furnished the occasion for the escape, from the 
capillaries, of the blood corpuscles by means of their ‘amceboid 
‘movements. To test and study this fact of migration of leuco- 
is departmen is edited by Dr. R. H. Ward, Trey, N. = 
