54 Seientific Intelligence. 
too early and returned too early, since the most favorable time for 
the navigation comes in the autumn. 
All of these expeditions, too, have hugged too closely, either 
the coast of Nova Zembla or of Spitzbergen; while it seems to be 
the case that the portion of the Nova Zembla sea most favorable 
for reaching the north lies between the 40th and 42d degrees of 
longitude. We have here, without trouble, reached almost to 7 9° 
N. lat., and nothing, except want of provisions, prevented our 
penetrating farther to the north. 
mals, ete. It appears, then, that in the commencement of autumn 
the Gulf Stream leaves the coast of Nova Zembla, and advances 
westward, but that then it extends over a broader surface. 1s 
layer of warm water is of unequal depth, and diminishes in strength 
to the north. 
An economical result of this expedition is the discovery of the 
enormous richness of the hitherto quite unexplored Nova Zembla 
sea in walrusses, 
imps currents in a double 
Coast of Norway, on board the Harald Haarfagr, Oct. 9, 1871. 
SCIENTIFIC INTELLIGENCE: 
I. CHEMISTRY AND PuHysics. 
1. On a new method of nickel-plating—Within the last few 
be a process of nickel-plating by electrolysis has been invented 
y Mr. Isaac Adams of Boston, and is now employed to a con- 
erabl : r. A 
which is patented, involves the employment of a bath of double 
sulphate of nickel and ammonium and of an anode of cast nickel. 
