At one time it was held that the expression "fact discovered" in the section is restricted to a physical or material fact which can be perceived by the senses,and that it does not include a mental fact,now it is fairly settled that the expression "fact discovered" includes not only the physical object produced,but also the place from which it is produced and the knowledge of the accused as to this,as noted in Pulukuri Kottaya's case 1946 Indlaw PC 23 (supra