174 



Dr. J. S. Lombard on 



[Mar. 7, 



Increase of tract of Left Superiority of Temperature. 

 In favour of 



Left side. Right side. 



Districts'. Districts. 

 1st Tier— 1st, 2nd, 3rd, 4th, 5th. 

 2nd Tier— 1st, 2nd, 3rd, 4th, 5th. 

 3rd Tier— 1st, 2nd, 3rd, 4th, 5th. 

 4th Tier— 1st, 2nd, 3rd, 4th, • ■ 5th. 



5th Tier— parts of 1st, 2nd, 3rd, parts of 1st, 2nd, 3rd ; 4th, 5th. 

 6th Tier— 1st, 2nd, 3rd, 4th, 5th. 



Before leaving this part of the snbject it may be well to state that 

 the situation of M. Broca's " frontal " thermometer seems to have been 

 in the neighbourhood of the 5th district, 1st tier, so far as the writer 

 can judge from the abstract of M. Broca's paper, which has come 

 under bis (the writer's) notice. Now, for this space, the writer's 

 results are, 68 in favour of the right side, and 32 in favour of the 

 left side ; but immediately adjoining is the 1st district 1st tier of the 

 writer's middle region, and, in the space specified, the figures are 30 

 right, 60 left, and 10 neutral. M. Broca's thermometer may have 

 heen in this space. The examination of the middle region does not 

 enter into this communication, and the above remarks are made 

 principally to show within what narrow limits the balance of superiority 

 of temperature may shift from one side to another. 



Quantitative comparisons of the two sides. 



The following is a summary of the mean results of 100 examinations 

 of each pair of symmetrically situated spaces. 



The mean difference of temperature is pretty nearly the same for 

 both sides of the head ; thus, the mean difference of temperature for 

 the eighteen spaces which are, on an average, of higher temperature 

 on the right side than on the left, is 0-255° C. (0-459° F.) ; while the 

 mean difference of temperature for the nine spaces which are of 

 higher temperature on the left side than on the right, is 0-2411° C. 

 (0*433° F.) The greatest difference noted is in the 3rd district, 3rd 

 tier, left side, namely, 0-461° C. (0-829° F.) ; the smallest differences 

 noted are in the 1st district, 4th and 5th tiers, and in the 2nd district, 

 4th tier, all right side, the differences being each 0'076° C. (0-136° F.). 

 The extreme range of difference of temperature is therefore 0*385° C. 

 (0'693° F.). The mean difference of temperature of all the observa- 

 tions taken together, irrespective of sides, is 0-247° C. (0*444° F.). 



2nd. — Comparison of spaces situated on one and the same side of the 



Head. 



(a.) Comparison of spaces situated in the same district of two 

 adjoining tiers — 50 observations on each pair of spaces. 



