UAN 3 1Q3 3 
CONTENTS. 
TRANSACTIONS OF THE SOCIETY. 
PAGE 
YII. — The Limits of Species in the Diatom ace.®. By Thomas 
Comber, F.L.S., F.R.M.S 455 
VIII. — A Contribution to the Freshwater Alg® of the South 
of England. By W. West, F.L.S., and G. S. West, 
A.R.C.S. Communicated by A. W. Bennett, F.L.S., 
SUMMARY OF CURRENT RESEARCHES. 
ZOOLOGY. 
VERTEBRATA. 
a. Embryology. 
Romanes (the late) Darwin , and after Darwin 512 
Galton, Francis — Law of Heredity 514 
Bell, A. S . — Influence of a Previous Sire 514 
Werner, F . — Regeneration of Tail in Lizards 514 
Giard, A . — Hypotypic Regeneration 515 
Ewart, J. Cossar — Critical Period in Development of Horse 515 
Foot, K . — Origin of the Cleavage Centrosomes 515 
Schultze, O . — Directive Influence of Gravity on Development 516 
Beneden, E. van — Historical Note as to Polar Bodies 516 
Wilson, H. V., & J. E. Mattocks — Lateral Sensory Rudiment in Salmon . . .. 516 
Hoffmann, C. K . — Development of Selachii 516 
Haswell, W. A . — Early Development of Cestracion 516 
Nishikawa, T . — Passage of the Eye in a Flat-Fish 517 
Ward, R. H . — Ovum in Testis of Lamprey 517 
Brachet, A . — Liver and Pancreas in Ammoccetes .. .. 517 
Hatta, S . — Development of Heart in Petromyzon 517 
Ohlin, Axel — Development of Teeth in Bottle-Nose Whale 518 
Kopsch, Fr . — Double Gastrula in Lizard 518 
b. Histology. 
Rutherford, W . — Structure of Striped Muscular Fibre 518 
Kolliker, A. von — Cells and Energids 519 
Schaffer, J Centrosomes in Ganglion and Cartilage Cells 519 
Boveri, Th . — Conditions of Cell-Division 519 
Rosenstadt, B . — Formation of Skin- Pigment 519 
Kapsammer, G . — Periostal Ossification 520 
Gehuchten, A. Van — Dorsal Cells of Spinal Medulla 520 
Tomes, C. S . — Tubular Enamel 521 
Mayer, F . — Nervous System of Ammoccetes 521 
Studnicka, F. K . — Intercellular Connections in Notochord Tissue 522 
c. General. 
Brewster, E. T . — Measure of Variability 522 
Sweet, G., & H. Adolphi — Variations in Spinal Nerves of Hyla 522 
Kohlbkugge, J. H. F . — Muscular Variations in Primates .. 522 
Cattaneo, G . — Inheritance of Acquired Characters in Camels 523 
A 
