viii Contents. 



February 16. 1885. page 



Some remarks on the Urea-ferment. By A. S. Lea .... 224 

 On the occurrence of reproductive organs on the root of Laminaria 



bulbosa. By W. Gardiner 224 



On a new form of sporangium in Alaria esculenta, with suggestions as 



to the existence of sexual reproduction in the Laminaria. By 



W. Gardiner 224 



On the types of excretory system found in the Enteropneusta. By 



W. H. Bateson 225 



March 2, 1885. 



On some Theorems on Tides and Long-waves. By E. Hill . . . 226 

 On the electrical resistance of Platinum at high temperatures. By 



W. N. Shaw 226 



On an automatic mechanical arrangement for maintaining a constant 



high potential. By R. Threlfall 226 



March 16, 1885. 



Further remarks on the Urea-ferment. By A. S. Lea .... 229 

 On some points in the anatomy of Nebalia. By G. Weldon . . . 230 

 Observations on the constitution of Callus. By W. Gardiner . . 230 

 Observations on Vegetable Proteids. By J. R. Green .... 231 

 On the developments of K', E\ J', G' in ascending powers of the mo- 

 dulus. By J. W. L. Glaisher 232 



April 20, 1885. 



Note on the rotation of the plane of polarization of light by a moving 



medium. By Professor Thomson 250 



On the theory of some experiments of Frohlich on the position of the 

 plane of polarization of light diffracted at reflexion from a grating. 

 By R. T. Glazebrook 254 



May 11, 1885. 



On the formation of lactic acid, creatine and urea in muscular tissue. 



By Professor Latham 258 



On the molecular theory of viscous solids. By C. Trotter . . . 276 

 Some applications of generalized space coordinates to differential analy- 

 sis. By Professor Larmor 279 



May 25, 1885. 



On the solution of the equations of vibrations of the ether and the 



stresses and strains in a light wave. By R. F. Gwyther . . 280 



