30 
The exports of treasure for the same period foot up as follows : 
RAE en ae, Geen ABRAM anaes Ma aU eae a (ody eS Pm Se $23, 355, 903 45 
"To Fieri oe ee ae oboe ies oleate igen me oa el pa le eee 5, 841, 183 99 
FD BRATS epee antes ohalke ve asve eval icons chats cokshete el areme eM ALA 1, 283; 2850" 
FG anette aes Sie (Sry hae Sia eM le eet ete abate ce iawaiar ts icin 9,031, 504 35 
Tones sere lL ee ie ee eeleleinl we = 641, 949 52 
ui Dass Erica ay a ga SRP RS a ea Te et ae 372, dol 70 
piheritral Ameri@ai. dais pee ee wletetellatmia's weiter be ate tie mie oie 171,980 00 
Mare; alinatelandss ! . Ree ee OC ee Gin bp oto ote a bie eee ele 57, 032 45 
Melwexico' CO a2 so Re Oe RL, | Saeatec aes ale, 42,000 00 
‘Mey Valparaiso... 2 eee ees «iain sas == = alee se ee = 723,450 97 
Ll Doha Dendy Mae eee ee Re Siti LC A dl ba iis al seu et a 500 00 
FICO ae Cored 8) begs eee Ye sheers Sec Sto ienet. Rieic \- anes aie Se ote 155, 000 00 
otal tn Veer! ee te was ce e's et eae eenee ee oak 41, 676, 722 16 
otal LS GOK sk e-toc ee arte coe oS pee Bnet --- 44,3645 393 a 
Wecrease wise T Rise Bee ee I, cS lie oe SE 2,688, 100 89 
SS 
The combined exports of treasure and merchandise during 1867, as compared 
with 1865 and 1866, were as follows: 
1865. 1866. 1867. 
Neves Lee Me yaa ces a cig ter eae op $45, 308, 228 | $44, 364, 394 | $41, 676, 292 
Mierelaidige:sivjis). Sse. ates etoile teers ae niess 14, 355,399 | 17,303,018 | 22, 465, 903 
epee CUNY Aik hilly, AML oP ry 59, 663, 627 | 61,667,412 | 64, 142, 195 
To the above amount of treasure should be added about $6,000,000 shipped 
east by the United States sub-treasurer, making the total $47,676,292, and the 
aggregate of treasure and merchandise $70,142,195, 
GREENSAND MARL AS A MANURE—‘Continued.) 
The marls of the State of Maryland, for the purposes of examination into 
their composition or value, may be conveniently classed as follows : 
1. Containing shells or carbonate of lime in considerable amount. 
2. Containing a preponderance of the true greensand element—glanconite. 
That is, these marls may be valuable either as containing potash, in the glau- 
conite constituent, or carbonate of lime derived from the presence of the fossil 
shells. ‘Those varieties which contain the glauconite are the most valuable, and 
the nearer the approxch of those to the standard of the New Jersey marls, as 
given in the last communication, the more desirable are they as manures, since 
potash is more desirable as a manure element than lime, because more costly 
when purchased by the farmer, and not usually found in any amount in mineral 
substances used as manure, while, on the other hand, lime carbonate can be 
derived from many sources and at comparatively cheap rates. The greensand 
particles being much heavier than the calciums or other constituents of the marl, 
are easily separated by washing, when the relative amounts of them may be 
