INDEX. 



1053 



Thermometer, automatic registration of, 

 by photogi-aphy, 851. 



Thermometrical observations made at the 

 Royal Society, reduction of, 820, 925. 



Thomas (H, L.), obituary notice of, 640. 



Thomson (J.), obituary notice of, 641. 



Thomson (W.), a matliematical theory of 

 magnetism, 845, 975, 



Thundercloud, phenomena of; analogy 

 of, to electric battery, 731. 



Thunderstorms, observations on, 287,957. 



Thymus bodies, origin, nature and func- 

 tions of, 597. 



Thyroid bodies, origin, nature and func- 

 tions of, 597. 



Thyroid gland, anatomy of ; its presence 

 in birds, fishes and reptiles ; relation to 

 the brain, 515. 



Tides, laws of, on coast of Ireland, 539. 



— — of the Pacific ; phenomena of, re- 

 presented by rotatory or stationary un- 

 dulations, 728; diurnal inequality of; 

 enormous amount of, in the North, 

 Pacific and Indian seas ; separate move- 

 ment of the diurnal and semi-diurnal 

 waves, 729. 



, phenomena of, in the Irish and 

 Enghsh channels ; their similarity, 743. 



, in the Irish sea, experiments on, 



743. 



— — of the English channel, further ob- 

 servations upon ; remarks upon the 

 laws by which the tidal streams of the 

 Enghsh Channel and German Ocean 

 appear to be governed, 817; identity 

 of, ill the eastern and western half; 

 oscillation of point of slack water, 818 ; 

 errors respecting the rotatoiy motion 

 of, and the navigation of ships in the 

 channel ; causes of the errors ; form 

 and dimensions of the tide-wave, 819. 



, cm-ves of, similar at different places ; 



semi-mensual series of heights a rule 

 for other series of heights ; springs 

 longer above the mean high water than 

 neaps below it, 916. 



Tide obser\-ations, results of continuous, 

 916. 



— streams, their meeting in More- 

 cambe bay ; differences of, in the Irish 

 sea ; course of, 744 ; sunilarity of those 

 of the English and Irish channels, 

 745. 



wave, upper portion falls quicker 



than the lower ; amount of difference, 

 744; curves assumed by; causes of 

 great height of, 745 ; time of reversed, 

 on either side of the " node " or 

 "hinge" of; situation of the nodes, 

 746. 



Tiu and iodine, compounds of, 565. 



Tomes (J.) on the structure of the dental 



tissues of mai'supial animals, and more 

 especially of the enamel, 847. 



on the structure of the dental tissues 



of rodentia, 951. 



Tongue, papillte of, differences in, 752 ; 

 then- action and uses, of various ani- 

 mals compared, 753, 



, structure and functions of the pa- 

 pillae of, 804. 



Torpedo, elechical lobe of the brain of, 

 679. 



Toynbee (J.) on the structure of the mem- 

 brana tvmpani in the human ear, 

 968. 



Transits, communication of, by electric 

 telegraph, 1006. 



Trincomalee, meteorological register kept 

 at, in 1843-44, 511. 



Triton, number of British species ; mode 

 of development of ; reproduces lost 

 parts at certain temperatm'es, 669. 



, influence of physical agents on the 



the development of, 949. 



Tudor (J.), statement of the working of 

 the compasses on board the Hon. E.I.C. 

 iron steamer Pluto, &c., 749. 



Turnor (Rev. C), accoimt of the New- 

 tonian dial presented to the Royal 

 Society, 513. 



Urine, chemistry and alkalescence of, 

 561 ; nitrogen in, mode of estimating, 

 599. 



, extractive material of, 626, 



, new substance in, during a case of 



mollities ossium ; loss of, equal to loss 

 of blood, 673, 



-, variations of the acidity of, 798 ; of 



the amount of uric acid; of the sul- 

 phates in; the influence of sulphuric 

 acid, sulphiu' and the sulphates on, 

 797. 



, acidity of, influence of medicines on 



the ; acidity hindered by liquor po- 

 tassae, alkalescence produced by tar- 

 trate of potash, acidity increased by 

 tartaric acid, 825. 



, on the so-called chylous ; consti- 

 tuents of and experiments on, 930; 

 effects of rest and food on the secre- 

 tions of, 931 ; changes in, independent 

 of digestion ; not the result of accu- 

 mulation of fat in the blood, 932. 



— -, variations of the sulphates and 

 phosphates in, in disease ; in acute 

 chorea, delirium, sulphates increased, 

 phosphates diminished, inflammation 

 of nervous structm-es, an increase of 

 both ; no alteration where the nervous 

 and muscular structures remain un- 



