During the mid-1890s, he was distinctly hostile to a central monetary role for gold as commodity money, championing the cause of silver and its re-monetization as a prerogative of the state.

Del Mar dedicated much of his free time to original research in the great libraries and coin collections of Europe on the history of monetary systems and finance.

[5] He moved to Hunt's Merchant's Magazine in 1860, and in 1863 co-founded and edited with Simon Stern the prestigious quarterly New York Social Science Review (first published in January 1865).

The coalition between the Democrats and Greeley's Liberal Republican Party was soundly defeated, and the LRP ceased to exist shortly after.

In the same year Del Mar represented the United States at the international monetary congress in St. Petersburg, Russia.

(3) Into the policy of continuing legal-tender notes concurrently with the metallic standards, and the effects thereof upon the labor, industries, and wealth of the country; and

In 1878, Del Mar was appointed as clerk to the United States House Committee on Expenditures in the Navy Department.

In 1878, Del Mar also wrote a series of letters under the Chinese pseudonym "Kwang Chang Ling" in the San Francisco Argonaut journal.

Del Mar was the New York state chairman of the Silver Party, and spoke at its 1896 Chicago meeting in support of William Jennings Bryan.

How far similar subterfuges are employed in the various private banking establishments of Germany is not known, and in the absence of such knowledge it is deemed safer to include the entire paper issues in the circulation.

This at least is a known quantity; the " reserves," as experience has too often and too sadly proved, may only exist in the playful imagination of that fortunate class who have secured the prerogative to issue bank money.