NewShelterhouseOpen; Plan MoreImprovementsJ. M. Wiedorhold, chairman of the Carroll Park Commission, announced Friday that city parks are ready for full summer activities.The new enclosed shellerhouse in Southside Park, with dual facilities including, two fireplaces and two sets of kitchen equipment, has been completed and is ready for picnickers. This new 30 by 50-foot building is of stone construction with shingle roof. An ei?ht-foot patio on the east side, new drinking fountain, and foundation plantings of evergreens ha e been installed.Formal GardensFormal gardens in- Graham Park will be improved with the addf-