INDEX. 221 



PAGE. 







Ooze 12 



Oplriocoma 15 



Ophiuridse 16&17 



Ooze, GHobigerina 18&19 



Orbulina 18 



Oldhamia 20 



Orthisina anomala » 34 



Ostrea 36 



Observatory of Father Respighi 139 



Optical Glass, Manufacture of 140 



Ozone, Effect of, on Pellicle 146 



P 



Papers read, 1873-74 ,. 7 



Pentacrinus 9 



" Preliminary Notes" on the Nature of the Sea Bottom 17 



Pulvinulina 18 



Porocidaris 22 



Pellatia Garnieri , 36 



Psammobia 38 



Plants 56 



Pseudopodia of GHobigerina 68 



Pyrites, examination of some samples of Californian 84 



Porphyry, chief matrix of Tin Ore 88 



Port Hacking River 100 



Polar Clock, Sir Chas. Wheatstone's 143 



Pellicle, Mr. Kennett's 145 



Photography, application of, to facilitate printing 146 



Pendulum Experiment, Foucault'e 149 



a 



Quicksilver in the Pacific Coast Range 77 



Quadrant Electrometer, Sir Win. Thompson's 148 



E 



Red Coral at Porto Rayo 13 



Rhynochetos jubatus, the Kagou 39 



Radiolarian Shells 70 



Ruby Tin-mining Company, Tasmania , 93 



