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tion from all known types of reptilian organization, and which could 

 not have been predicated ; namely, that this colossal reptile, which 

 equalled in bulk the gigantic Edentata of South America, and like 

 them was destined to obtain support from comminuted vegetable sub- 

 stances, was also furnished with a large prehensile tongue and fleshy- 

 lips, to serve as instruments for seizing and cropping the foliage and 

 branches of trees ; while the arrangement of the teeth as in the ru- 

 minants, and their internal structure, which resembles that of the 

 molars of the Sloth tribe in the vascularity of the dentine, indicate 

 adaptations for the same purpose. 



Among the physiological phsenomena revealed by Palaeonto- 

 logy, there is not a more remarkable one than this modification 

 of the type of organization peculiar to the class of reptiles, to meet 

 the conditions required by the economy of a lizard placed under 

 similar physical relations, and destined to effect the same general 

 purpose in the scheme of nature, as the colossal Edentata of former 

 ages, and the large herbivorous mammalia of our own times. 



From the facts detailed, the author is led to consider the specimen 

 described in his memoir of 1841, as being probably the lower jaw of a 

 young Iguanodon (but the true nature of which, from the absence of 

 the crowns of the teeth, was doubtful) belonging to the same family, 

 but referable to a distinct genus or subgenus ; and he proposes the 

 name of Regnosaurus Northamptoni for that remarkable fossil saurian. 

 The communication was illustrated by several drawings of the speci- 

 mens described. 



"An Account of some Observations made on the Depth of Rain 

 which falls in the same Localities at different altitudes in the hilly 

 districts of Lancashire, Cheshire and Derbyshire." By S. C. Homer- 

 sham, C.E. Communicated by George Newport, Esq., F.R.S. &c. 



The author states, that having been present at a meeting of the 

 Royal Society when a paper was read on the Meteorology of the 

 Lake districts of Westmoreland and Cumberland, by J. Miller, Esq. 

 of Kendal, in which it was stated that the quantity of rain falling in 

 mountainous districts appears to increase from the valley upwards, to 

 the altitude of about 2000 feet, and then rapidly to decrease, he 

 washes to lay before the Royal Society the results of his own obser- 

 vations, which lead him to a different conclusion. After stating that 

 he had been at some trouble to analyse Mr. Miller's observations 

 which have been communicated to him by that gentleman, he is of 

 opinion that they do not warrant the conclusion deduced from them, 

 and are also at variance with the recorded observations of Daines 

 Barrington, Dr.Dalton, Professor Daniell and others, as well as those 

 of Capt. Lefroy and Col. Sabine. 



The author then shows from observations very carefully made in 

 Lancashire, Cheshire and Derbyshire, from January 1846 to March 

 1848, that more rain falls at the bottom than at the tops of hills of 

 a less elevation than 2000 feet in the same locality, and that the 

 quantity diminishes in a ratio almost precisely corresponding to the 

 height. The details are given in tables of monthly observations, 



