Yes, dry mustard can safely be used as a substitute for mustard seed. However, it may make the brine cloudier than mustard seed and may alter the flavor.   1 teaspoon mustard seeds = 1Â½ teaspoons dry mustard.
Humeston is a city in Wayne County, Iowa, United States. The population was 494 in the 2010 census, a decline from 542 in the 2000 census.
The city limits encompass 8.8 square miles and Cedarville's population is 1,394 as of the 2010 Census. Cedarville was first incorporated on July 19, 1881, un-incorporated in 1981, and re-incorporated on September 25, 1998.