574: Ohifuary — Rev. Professor S. Ilavghton. 



reorganize the Medical School, and being liberally supported by the 

 Provost and Board with funds, additions were made to its buildings 

 and equipments. A new chemical laboratory (now under the 

 direction of Professor Emerson Ke3'nolds) was built, and a spacious 

 anatomical museum was erected and well fui'nished with typical 

 specimens for the use of students. Thus provided with all appliances, 

 and with the objects of practical study afforded by the Dublin 

 Hospitals, it is not surprising that the Dublin University Medical 

 School ranks second to none amongst the institutions of this kind in 

 the British Islands. 



Nor did Dr. Haughton neglect original investigation into many 

 curious pi'oblems of natural historjr. As Secretary to the Zoological 

 Gardens in the Phoenix Park, Haughton had many opportunities for 

 studying the habits of the inmates ; and one of the most remarkable 

 of his experiments was that by which he endeavoured to determine 

 the relative strength of the lion and tiger. The writer cannot find 

 an account of this experiment in "The Principles of Animal 

 Mechanics," and has to depend on his memory alone. As far as 

 he recollects, the trial was tested by the number of men hauling at 

 a rope required to pull the fore-paw of each animal through the 

 cage against its will. The experiment was decided in favour of the 

 tiger, so that "the king of beasts " was dethroned from his position 

 of eminence. A more important series of experiments was that on 

 the muscular strength carried out by measurements of the cross- 

 section of the muscles of various animals, resulting in the general 

 proposition that " the work done by the contraction of a muscle is 

 proportional to its length and area of cross-section conjointly."^ 

 These experiments, like most of those undertaken by Haughton, 

 were worked out by accxirate mathematical formulfe. 



To geologists, the investigations which were of greatest interest, 

 were contained in his papers on the Irish granites, in Avhich he was 

 able to show by chemical analyses that in each granitic region (and of 

 these there are four) there are representatives of the soda and 

 potash varieties.^ At the time these papers were published, micro- 

 scopic analysis had not come into use ; and although more recent 

 observers, with the aid of thin sections under the microscope, have 

 examined these rocks, it has not been shown that Haughton's 

 conclusions can be shaken. Another interesting set of observations 

 were those carried out by Dr. Haughton and the writer on the 

 Vesuvian lava-streams from specimens ranging throughout a period 

 of 237 years (from 1631 to 1SG8), which resulted in showing that 

 both in chemical composition and mineral structure no important 

 change had taken place throughout this period.^ 



Besides his numerous contributions to the transactions of learned 

 societies, Haughton, in concert with his friend and colleague, the 

 late Eev. J. Galbraith, brought out a series of textbooks, designed 



^ " Principles of Animal Mechanics," p. 443. 



2 Q J G.S., vol. xii, pp. 171, 188 ; and vol. xiv, p. 300. 



3 Trans. Eoy. Irish Acad., vol. xxvi (ISTti). 



