1879. } Microscopy. 137 
St. Lawrence bay, October 20, 1878, reports that the natives have 
seen a vessel. 
So far this has been one of the most successful and important 
of modern exploring voyages. The chart of the voyage is pub- 
lished in the A@itthetlungen for January, and is of great interest to 
geographers, as so many corrections have been made in the 
coast-line of the northern shores of Asia 
he discovery by the Norwegian Captain E. Johannsen, of a 
small island in long. 81° E. and lat. 77° 55’ N., was made on the 
3d of September last. He named it “Ensomhaden” (Loneliness). 
The sea ‘was open in every direction round it except to the south- 
east, where drift-ice was to be seen. 
lready commerce has sprung up on the new route, and during 
the last season vessels were sent out from English, German, and 
Norwegian ports, and made more or less successful voyages to 
the Ob and Yenisei and back. 
MICROSCOPY.* 
NucLeaTED RED CorpuscLEs OF Human BiLoop.—Many of the 
readers of the AMERICAN NATURALIST are familiar with the little 
instrument generally known as Beck’s Vertical Illuminator, it is 
in fact a modification of a device invented by Prof. H. L. Smith, 
of Geneva, N. Y. 
This illuminator was mg oats intended to be used in conjunc- 
tion with medium power, dry objectives, of moderate angles, such 
as were formerly so much in vogue. Mr. Morehouse, a well 
known microscopist of Wayland, New York, fortunately discov- 
ered that by the conjoint use of the illuminator with immersion 
_ objectives of high balsam apertures, astonishing results might be 
secured, as for instance the resolution of the markings of podura 
_ and other insect scales, the striation of valves of Frustulia saxonica, 
Surirella gemma and similar “ difficult” diatoms, under amplifica- 
tions of 3000 and 4000 diameters, and as a matter of course, by 
See oe a 
Sifficulte in sbistaste h beautiful cme of the Nobert 19th band, 
the simultaneous exhibition of the long and transverse striæ af 
Terea saxonica, etc., under powers of three and four thousand 
diameter: 
een to test the vertical illuminator over histological prep- 
td 
arations, I thus examined a slide of human blood, improvised for oo : - 
the occasion, and was astonished to find about three-fourths of 
1 This department is edited by Dr. R. H. Ward, Thy: N. Y. 
