12 NOTES ON PHOTO-MICROGRAPHY. 
Plate II., Fig., 1, is a longitudinal section of barley, showing 
the embryo. The combination used was Ross’ 2 in. objective 
and B eyepiece. Exposure, 20 seconds, lime-light. Magnification 
30. 
Plate II., Fig. 2, isalso a longitudinal section of barley, showing 
the endosperm, aleurone cells, testa, pericarp, and palea. Ross’ 
1 in. objective and B eyepiece. Exposure, 30 seconds, lime-light, 
Magnification 350. 
Plate III., Fig. 1. Scales of Epinephele Fanira. Seibert’s No. 
IV. objective, No. III. eyepiece. Exposure, 15 seconds, lime- 
light. Magnification 450. 
Plate III., Fig. 2. Portion of scale of Epinephele Fanira, 
Seibert’s No. Vib objective, No. IIL. eyepiece. Exposure, 60 
seconds, lime-light. Magnification 1,700. 
Plate III., Fig. 3. Pure cultivation of Saccharomyces arevisia. 
Seibert’s No. IV. objective, No. III. eyepiece. Exposure, 20 
seconds, lime-light. Magnification 450 diameters. 
