Vi. CONTENTS. 



PAGE 



A Catalogue of the si)ecies and varieties of Cyprrca, arranged on a new 

 circular system in accordance with true sequence of affinity. By 

 James Cosmo Meta'ill, M.A., F.L.S. 238 



Memoir of the late Professor Balfour Stewart, LL.D., F.R.S. By 

 Professor A. Schuster, Ph.D., F.R.S., F.R. A. S 253 



m^OCEFDINGS. 



Bailey, Charles, F.L.S. — Obituary notices of Dr. A. de Bary, Dr. Asa 



Gray, and Dr. J. T. Koswell 93 



BoTTOMLEY, James, B. A. , D.Sc, l-.C.S. — On an error in his paper 

 "On the Composition of projections in Geometry of two dimen- 

 sions'' ... ... ... ••• •■• ••• ••• ••• ••• S9 



Additional Note on "The equations expressing the decomposition of 



Potassic Chlorate l)y heat" ... ... ... ... ... ... 9° 



Brothers, H. E., A.I.C, F.C.S. — Note on a Nickel Arsenide. Com- 

 municated by Alfred Brothers, F.R. A. S 135 



Dixox, Harold B,, IM.A., F.R.S. — On the Union of Hydrogen and 



Nitrogen ... ... ... ... .•• •.• ••• ••■ 9^ 



Faraday, F. J., F.L.S.— On Herons and Thrushes in the Ardennes ... i 

 Communication from Mr. G. J. Romanes, M.A., LL.D., F.R.S., on 



experiments bearing on the theory of Physiological Selection ... 60 



On the Perched Blocks on Norber, a spur of Ingleborough ... 98, 104 



HowoRTH, Henry H., F.S.A., M.P.— On an Old Clock in the 



Chetham College Library 3 



Kendall, Percy F.— Note on an Erratic Block observed during excava- 

 tions for a sewer in Oxford Street, Manchester. Communicated 

 by Thos. Kay 97 



Lamb, Horace, M.A., F. R.S.— On Reciprocal Theorems in Dynamics... 27 



Melvill, James Cosmo, ^LA., F.L.S.— On an original printed draft of 

 Warren Hastings' "Defence," with manu.script annotations by 

 the Right Hon. Edmund Burke 3 



Nicholson, Francis, F.Z.S.— Herons and Thrushes in France and 



Belgium ... ... ... .•• ••• ••• ••• ••• ^ 



PiCKsroNE, ^V^L— On a portable pneumatic tool giving 5,000 to 20,000 



strokes per minute, and a small steam compressed-air engine 

 working at 5,000 revolutions per minute. Communicated by 

 \V. H. Johnson, 15. Sc ^35 



