The Boston Archdiocese is pouring $850,000 into a last-minute effort to defeat a state ballot measure to legalize marijuana, calling increased drug use a threat to the Catholic Church’s health and social-service programs.

The church’s contribution represents about a 50 percent increase over what the antimarijuana Campaign for a Safe and Healthy Massachusetts has collected so far. The total, however, is still less than half of what has been raised by the referendum’s proponents.

Read the complete story at BostonGlobe.com.

Don’t have a Globe subscription? Boston.com readers get a 2-week free trial.