394 Miscellaneous Intelligence. 
trum of comet 1873, c, consisted of three bands in the yellow, 
green, and blue. The relative intensity of the bands in order from 
3,7, and 2. Each of the 
bands shaded off very markedly toward the violet, the greatest 
intensity being toward the red. Only one observation was 0 
tained, and then the comet was near the horizon. 
Of the comet 1873, d, Dr. Vogel obtained several observations. 
The spectrum consisted of the three ordinary bright lines, which 
were, however, sharper than usual toward the red. Their rela 
tive brightness was represented by the numbers 1, 3, and 1, or 4, 
12, and 4. The lines were sharply limited on the side of the red, 
and these limits were at the following wave lengths, 561°5; 516.7; 
72°6 millionth millimeters. The bands ended at 541, 500, and 
464 mill, mm., and bear a close resemblance to the carbon spectra, 
with which Dr. Vogel gives a detailed comparison. 
4 
IV. MIscELLANEOUS SCIENTIFIC INTELLIGENCE. 
munication, These two papers were the only subjects of the day 
which our space will permit us to discuss. Capt. Davis confined 
himself to the proceedings of the Challenger Expedition north of 
the Equator, which formed a natural section of the voyage. The 
viewed in their relations to physical geography rather hee fe : : 
tention of the scientific staff of the Expedition. He escribed 
the bottom, In the course of the voyage outward from the 
to Gibraltar, and thence to Madeira and the Canaries, the firs 
between Madeira and the Canaries 2,350, 2,400, 2,200, and 
fathoms; but westward and northward, outside this are ha 
* r . * * i he 
side the Mediterranean, circumscribed by a Seba _ bagi 
two deep basins within that sea. Great depths were founc much 
up to the islands of the Madeira and Canaries group, but 4 “ 
