699 



muscles in living animals, on the 

 connexion between, 671. 



Nicol (W.) on the anatomical struc- 

 ture of recent and fossil woods, 



. 660. 



Object-glasses, achromatic, 593. 



Omentum, on the use of the, 683. 



Optical elasticity in oblique prismati- 

 cal crystals, on the positions of the 

 axes of, 556. 



Optical characters, their value in the 

 discrimination of mineral species, 

 575. 



Optics, physical, on, 295. 



Organic substances, effects of long- 

 continued heat on, 576. 



Orkney Islands, geology of, 644. 



Ornithology, 167, 610. 



Oxichloride of antimony, crystallized, 

 chemical composition of, 587. 



Pentland (J. B.) on the ancient inba- 

 '■•■'^-nts of the Andes, 623, 

 ■,„'allic, 579. 

 ,^ •; lants of the Faroe Is- 

 lands, 



Phillips (iLof.) on the quantities of 

 rain falling at different elevations 

 above the surface of the ground at 

 York, 560. 



on the relations of mineral veins 



and the non-metalliferous joints in 

 rocks, 654. 



Physics, 531. 



Physiology, 95, 667. 



Poisons, contagious, on, 73. 



, morbid, generated by the animal 



body, 69. 



, their effects on the animal oeco- 



nomy, 681. 



Porpoise, anatomy of the blood-ves- 

 sels of the, 682. 



Powell (Prof.) on the achromatism of 

 the eye, 548. 



on the dispersion of light by the 



hypothesis of undulations, 549. 



, on the repulsion excited between 



surfaces at minute distances by the 

 action of heat, 549. 



Radiate animals, state of our know- 

 ledge respecting the, 227. 



Rain, on an apparent anomaly in the 

 measure of, 560. 



Rain, on the quantitier falling at dif- 

 ferent elevations, at York, 560. 



, on the difference of the quantity 



at different heights, 563. 



, origin of, 565. 



Reichenbach (Dr.) on the products of 

 destructive distillation, 591. 



Reid (Dr. J.) on the connexion be- 

 tween the nervous system and the 

 irritability of muscles in living an' 

 mals, 671. 



Reindeer, on the laryngeal sac of thu, 

 623. 



Rennie (G.) on the state of our know- 

 ledge of hydraulics as a branch of 

 engineering, 415. 



on an instrument for taking up 



water at great depths, 595. 



Reptiles, on the natural arrangement 

 of, 172. 



Repulsion, excited between surfaces 

 at minute distances by the action of 

 heat, 549. 



Resistance of fluids, on a new law of, 

 531. 



Rivers, application of the science of 

 hydraulics to, 425. 



, forms of the surface of, 468. 



Robinson (Rev. Dr.) on the visibility 

 of the moon in total eclipses, 552. 



Rogers (H. D.) on the geology of North 

 America, I. 



Riippell (Dr.) on the effects of poisons 

 on the animal oeconomy, 681. 



Russell (J. S.) on the reduction of an 

 anomalous fact in hydrodynamics, 

 and on a new law of the resistance 

 of fluids, 531. 



6'aZ7«o?!t<f^ ofthe North-west of Suther- 

 landshire, on the, 613 ; on the dif- 

 ferent species which frequent the 

 rivers and lakes of Europe, 617. 



Salts, hydrated, 579. 



Sedgwick (Prof.), address at general 

 meeting, ix. 



Selby (P. J.) on the orbital glands in 

 birds, 609. 



Sharpey (Dr.) on the anatomy of the 

 blood-vessels of the porpoise, 682. 



Shells, marine, at considerable eleva- 

 tions near Preston, 655. 



Statistics of Glasgow, 685. 



of Manchester, 690. 



, regarding agriculture, 693. 



