CONTENTS. 

 VOL. XVIII. 



No. ML— June 17, 1869. 



Page 



On a Group of Varieties of the Muscles of the Human Neck, Shoulder, and 

 Chest, with their transitional Forms and Homologies in the Mammalia. 

 By John Wood, F.R.C.S 1 



Results of the first year's performance of the Photographically Self-record- 

 ing Meteorological Instruments at the Central Observatory of the British 

 System of Meteorological Observations. By Lieut. -General Edward 

 Sabine, R.A., President 3 



On the Connexion between oppositely disposed Currents of Air and the 

 Weather subsequently experienced in the British Islands. By Robert H. 

 Scott, M.A., Director of the Meteorological Office 12 



On the presence of Sulphocvanides in the Blood and Urine. By Arthur 

 Leared, M.D., M.R.I.A., &c 16 



On some Elementary Principles in Animal Mechanics. — No. II. By the 

 Rev. Samuel Haughton, M.D. Dublin, D.C.L. Oxon., Fellow of Trinity 

 College, Dublin 22 



Researches on the Hydrocarbons of the series C n H2n+2. — No. V. On Octyl 

 Compounds. By C. Schorlemmer 25 



On the Derivatives of Propane. By C. Schorlemmer 29 



On Hultenia, a Genus of Vitreous Sponges. By Wyville Thomson, LL.D., 

 F.R.S., Professor of Natural Science in Queen's College, Belfast 32 



An Inquiry into the Variations of the Human Skull, particularly in the 

 Antero-posterior Direction. By John Cleland, M.D., Professor of Ana- 

 tomy and Physiology, Queen's College, Galway 35 



Researches on Vanadium. — Part II. By Henry E. Roscoe, B.A., Ph.D., 

 F.R.S 37 



On Pal&ocoryne, a genus of the Tubularine Hydrozoa from the Carboniferous 

 formation. By Dr. P. Martin Duncan, F.R.S. , Sec. Geol. Soc, and H. 

 M. Jenkins, F.G.S 42 



Bakerian Lecture.— On the Continuity of the Gaseous and Liquid States of 

 Matter. By Thomas Andrews, M.D., F.R.S., &c 42 



