class Magick::ImageList

def method_missing(methID, *args, &block)

it up the line. Catch a NameError and emit a useful message.
send it to the current image in the array. If there are no images, send
the method to the current image. If the method isn't explicitly supported,
The ImageList class supports the Magick::Image class methods by simply sending 
def method_missing(methID, *args, &block)
    begin
        if @scene
            @images[@scene].send(methID, *args, &block)
        else
            super
        end
    rescue NoMethodError
      Kernel.raise NoMethodError, "undefined method `#{methID.id2name}' for #{self.class}"
    rescue Exception
        $@.delete_if { |s| /:in `send'$/.match(s) || /:in `method_missing'$/.match(s) }
        Kernel.raise
    end
end