Proposed Detective Agency. Mr. H. Voelker, a gentleman of experience expe-rience in tho detective line, is in the city looking over tho ground preparatory to establishing a detective bureau. Mr. Voelker will associate with himself in the business talent from the coast and from Nevada, and will secure the services ser-vices of an able local ollicer. This bureau will be thoroughly organized and incorporated under the name of the United State Detective association.