What 2nd Member has a 2nd Party of conservative, and an Election of 1853 by-election?
CREATE TABLE "m_ps_1832_1885" (
  "election" text,
  "1st_member" text,
  "1st_party" text,
  "2nd_member" text,
  "2nd_party" text
);
SELECT "2nd_member" FROM "m_ps_1832_1885" WHERE "2nd_party"='conservative' AND "election"='1853 by-election';