1868. ] Metallurgy and Mining. 251 
nition of his labours extending over nearly half-a-century in the 
departments of Geology, Mineralogy, and Crystallography; and 
especially for the admirable series of Geological Surveys of Saxony 
and adjoining countries, executed by himself and his coadjutors 
between the years 1836 and 1848; and for the great standard 
work on Geology (Lehrbuch der Geognosie), which, with the ex- 
cellent courses of lectures delivered by him at Freiberg and Leipsig, 
has exercised a powerful influence on the education of the newer 
generation of continental geologists. 
The balance of the proceeds of the Wollaston Donation-fund 
they have awarded to Mons. J. Bosquet, of Maestricht, in aid of 
the valuable researches on the Tertiary and Cretaceous Mollusca, 
Entomostraca, and other fossils of Holland and Belgium, on which 
he has been so long and successfully engaged. 
We cannot conclude this Chronicle without bearing testimony 
to the great loss recently sustained by Natural Science in the death 
of Professor G. C. B. Daubeny, who was equally eminent as a 
geologist, a chemist, and a botanist, and who was also favourably 
known as a contributor to this Journal. 
9. METALLURGY AND MINING. 
METALLURGY. 
Proressor P. Tunner, of Vienna, has written very favourably * 
of a modification of the blast-furnace introduced by Mr. Fr. Liir- 
mann, manager to the Georg-Marien Mining and Iron Company at 
Osnabriick, Prussia. From the recommendation of so eminent an 
authority as Professor Tunner, and from the fact that in many of 
the more important ironworks in Germany M. Liirmann’s principle 
has been adopted, we feel compelled to notice it. 
In this invention, the walls of the hearth are carried to the 
bottom on all sides, so that there is no opening in the front—no 
tymp and no dam. In the blast-furnace, as usually constructed, 
there is an opening in front—the short fore-hearth—about four 
feet long and three feet wide, which is closed in front by a wall 
called the dam. In Liirmann’s furnace the scoria is discharged 
through a scoria-outlet about six inches below the twyers, which is 
dovetailed into a cast-iron plate fastened in the wall, and provided 
with canals for the circulation of cold water. 
The professed advantages of the invention are said to be as 
follows :— 
The slag discharges itself through the scoria-outlet, at about 
* “ Oesterreichische Zeitschrift fiir Berg und Hiittenwesen,” 9th Dec., 1867. 
VOR V. T 
