# File lib/aws/elb/instance_collection.rb, line 109
      def health *instances

        instance_ids = instance_ids(instances)

        opts = {}
        opts[:load_balancer_name] = load_balancer.name
        opts[:instances] = instance_ids unless instance_ids.empty?

        client.describe_instance_health(opts).instance_states.map do |state|
          {
            :instance => self[state.instance_id],
            :description => state.description,
            :state => state.state,
            :reason_code => state.reason_code,
          }
        end

      end