Stereoscopic Pictures.

AN article of considerable interest to photography and to medical men and other scientists appears in the current issue of the Agricultural Journal of India. It is from the pen of Mr. F.M. Howlett, B.A., Imperial Pathological Entomologist, and contains valuable information for scientific study with the aid of stereoscopic pictures. The neglect of these pictures is due to a supposition that the cost of production is great and to the difficulty of carrying a rather cumbrous instrument.