REPORT OF NEW JERSEY STATE MUSEUM. 19 
well as to the Museum. There were no better specimens to be 
found at the Exposition, and, consequently, attracted much atten- 
tion and favorable comment. 
GEOLOGICAL SURVEY. 
The different ores and minerals in the cases are so grouped as 
to show the different ores mined, and also the different products 
secured during the concentration of the same. The samples 
exhibited show this fairly well. | 
The iron ores in the case show the best grade of ore as mined, 
while the concentrates show the poorer grade and the different 
products that are secured during the concentration of the lean 
ore to a high-grade ore. 
The zinc ores also show the different ores as mined, and the 
concentrates show the different products that they secure during 
the concentration. Some of these products are of little value, as 
in the case of the tailings of white limestone which is shown as 
one of the end products, while the other product is the high- 
grade zine ore freed from all detrimental impurities. Since the 
zinc ores are found in the white limestone, we have placed the 
limestone next to the zinc ores; also the gneiss and mine rock 
occupy the same position in regard to the iron ores. 
The cement casé shows the cement rock as mined, the different 
ingredients added to it to make cement, and also the finished 
product. There is also some test specimens showing the method 
by which the cement is tested for its physical properties. 
The building stones, copper ores, glass sands and marls will 
need very little explanation. 
The zine minerals, which are chiefly of scientific interest, are 
in a case by themselves, as are also the various minerals found in 
the trap rock series. 
MAMMALS. 
There are two large cabinets containing groups of mammals, 
including the old and young. Eleven small ones, with groups of 
male and female. They, with young, represent the only mam- 
