£50 INDEX. 
Macallum, A. B., on assimilated iron _ Nervous system of Necturus, its de- 
compounds in animal and vegetable velopment, by J. B. Platt, 485 
cells, 175 | 
Macbride, E. W., on the development | Platt on the development of the peri- 
of Asterina gibbosa, 339 | pheral nervous system in Necturus, 
Moore, J. E. S., on the structural 485 
changes in the reproductive cells 
during the spermatogenesis of Sedgwick on the cell-theory, with a 
Elasmobranchs, 275 | reply to Mr, Bourne, 331 
ies Spermatogenesis of Elasmobranchs, 
Necturus, differentiation of the ecto- by J. H. S. Moore, 275 
derm in, by Julia B. Platt, 485 
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