284 General Notes. [March, 
market value of metallic copper after having been transported 
hundreds of miles; the spot value of a crude substance like un- 
ground, unrefined barytes, and the value of a finished product 
like brick (in which the cost of manufacture is the leading item), 
such details cannot well be taken as items in a general summary. 
The statistics have been compiled with a view to giving informa- 
tion on those points which are of most interest and utility, and art 
presented in the form usual in the several branches of trade sta- 
tistics. The result is that the values stated for the different pro- 
ducts are necessarily taken at different stages of production of 
transportation, etc. Theoretically perfect statistics of en r 
products would include first of all the actual net spot y 
each substance in its crudest form, as taken from the eart! d 
yet for practical purposes such statistics would have little m 
other than the fact that the items could be combined ei a 
total in which each substance should be rated ona i 
basis. The following groupings, therefore, are presente 
full realization of the incongruity of many of the items: 
Values of the metallic products of the United States in 1882. 
6. 
Pig ifon, spot VMN, risen sass St RP AK roth S eoo 
Silver, coining value........... iw desis s EE wee 3324500,000 
Reet CORBIN valhe ins piss wd iad beds Cums seol ndeawas 16,038.09 
Cor pér, value at New York city......... NEE E PTE ee 12.624.550 
Lead, value at New York city........ Sree os een . 646,620 
Zinc, value at New York city.. soe iocis iene sA rr 4487537 
‘Quicksilver, value at San Francisco......... week peeneee 309.771 
Nickel, value at Philadelphia.......... E SE T 12,000 
Antimony, value at San Francisco........ Peres Pee ee 1,000 
Platinum, value at New York city....... vdiaaten voce nee eee 
Total oR ee ee $219,755 a 
in 1882 (0l : 
. . ay 
Values of some of the non-metallic products of the United State. 
spot values except chrome tron ore). 
ERE EN POE TS 
Cement ee yoe eae neue eam 
Limestone for iron flux......... aeee CU eecrere ces 
HoOspnate feria vee 
New Jersey marls PM Pr oe 
Crude borax ., X 
. 
“eee Ai 
vee 
eevee 
a | a s... 
Manganese ore ., UM Gee eee 
Asbestos.,... Cues tensed 
Graphite. ....... E EE here 
Sulphur... i 
Commit ore ind mate oo i ice vs teats a 
Precious stones, uncut E te 
