Lai 
1879.] ` Microscopy. *. 965 
being the stream — known by RAE under the errone- 
ous name of Chob 
“ Maj. Pinto did aek descend these rivers for any great distance, 
but struck across their upper waters. He had by that time 
exhausted his means and was reduced to the verge of starvation 
in a district of swamps inhabited by a light-colored race of sav- 
ages allied to the Bushmen. He consequently made for the 
Zambesi by the nearest route, and eventually suċceeded in strug- 
gling through to the less barbarous settlements further south. He 
has submitted all his maps and astronomical observations, and his 
well kept ae register to the inspection:of competent 
judges in Lon 
The other division of the Portuguese Expedition, under Messrs. 
Capello and Ivens, arrived at Cassange in December, 1878. 
Since leaving Bihé in November, 1877, they have explored a part 
of the river Quango. When last heard from (April 5, 1879) they 
were on the margin of the river Lucala, examining the country 
traversed by the Cubango. They had already explored that 
river from its source to 8° S. lat. 
MICROSCOPY.'* 
CONTAGION AND THE GERM THEORY.—One of the best of the 
“American Health Primers,” now in course of publication by — 
Lindsay & Blakiston, of Philadelphia, is the little treatise upon 
“Long Life and How to Reach it,” by Dr. J. G. Richardson. As 
might be expected, from the name of the author, those parts of 
the subject which have been fields for microscopical work, are 
treated with marked interest ns ability. The germ theory of 
disease, in which the author seems to have become an earnest 
believer, is explained in a very Sinple and plausible manner, and 
is made the text for much sensible advice as to the means of 
avoiding contagious diseases, including those which are commu- 
nicated by public drinking cups and toys, such as whistles and toy 
balloons, which are touched to the lips after having been similarly 
used by other people. Very valuable, too, are the conclusions in 
Tue Microscope in Entomoiocy.—tThe illustrated paper on 
the anatomy of Amblychila cylindriformis, by Mr. Carl F. Grissler, 
of Brooklyn, published in recent numbers of Psyche, is so full of 
philosophical spirit and of fine microscopical work, that it will 
interest many who are not entomologists and to whom the Cicin- 
delidz would be new acquaintances. This thorough and ee 
_} This department is edited by Dr. R. H. WARD, Troy, N. Y. 
