Botany and Zoology. 73 
of the exceedingly minute schreibersite crystals are cut across and 
are seen as small dots on a frosted surface; some appear as 
minute needles, arranged in parallel lines, like the trees in an 
orchard. A few elongated patches of a whiter iron-nickel alloy are 
also visible. 
he analysis of a somewhat oxydized piece, gave the following 
composition : 
ory 2 ie 92°809 
(Mapper So Pa ee 0°034 
Conatt 22 eit sa 0°395 
Nickel 22 ce ee 4°665 
Mémnganése 220 5 285 oe 07141 
Biiphar: So 2 ee 0°037 
Phosphoras 2-2 277 0°251 
98°332 
0°251 per cent of phosphorus is equal to about 1°8 per cent 
of schreibersite—— From the Report of the Geological Survey of 
Pennsylwania for 1875. 
Til Botany anp ZOOLOGY. 
issued. The economical importance of re-foresting poor or agri 
culturally worthless lands in that State, and elsewhere, was 
his board offers, in the first place, for the best plantation of a 
ess than five acres of larch, or on the cape, &e., of Seoteh or Cor- 
‘ican pine, originally of not less than 2700 trees to the acre, on 
0 uU 1 
for rocuri 
e ot hy 4 trees for the purpos 
