CONTENTS. 
(B.) 
VOL. 178. 
I. Additional Evidence of the Affinities of the Extinct Marsupial Quadruped 
Thylacoleo carnifex (Owen). By Sir Richard Owen, K.C.B., E.R.S ., 
&c .page 1 
II. Remarks on the Cloaca\ and on the Copulatory Organs of the Amniota. By 
Hans Gadow, Ph.D., M.A., Lecturer on the advanced Morphology of Verte- 
hrata, and Strickland Curator in the University of Cambridge. Communicated 
by Professor M. Foster, Sec. R.S ... 5 
III. On the Changes in the Proteids in the Seed which accompany Germination. By 
J. II. Green, B.Sc., B.A., Demonstrator of Physiology in the University of 
Cambridge. Communicated by Professor M. Foster, Sec. R.S. . . . . 39 
IV. The Carbonic Acid, Organic Matter, and Micro-organisms in Air, more especially 
of Dwellings and Schools. By Professor Thos. Carnelley, B.Sc., and J. S. 
Haldane, M.A., M.B., University College; and A. M. Anderson, M.D., 
Medical Officer of Health, Dundee. Communicated by Sir Henr y E. Piqscoe, 
E.R.S .. 61 
V. A New Method for the Quantitative Estimation of the Micro-organisms present in 
the Atmosphere. By Percy F. Frankland, Ph.D., B.Sc., F.C.S., F.I.C., 
Associate of the Royal School of Mines. Communicated by Professor 
Frankland, D.C.L., LL.D., M.D., E.R.S. . 113 
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