2 1 o Annals of the Philosophical Club 



arm themselves, the hero decapitates the giant at a blow, 

 the gnomes are killed in fight, the princesses are rescued, 

 vehicles are procured, and the whole party returns to the 

 capital in triumph, with the heads of the giant and two 

 gnomes as trophies. 



Oct. soth, 2Qist meeting. Mr. Evans exhibited a black 

 slate tablet of Roman work, about one and five-eighths of an 

 inch square and five-sixteenths of an inch thick, with four 

 incised inscriptions, which indicated eye-salves. 1 It had 

 been found in the neighbourhood of Bonn, and he believed 

 its date to be the third century of the present era. Upwards 

 of a hundred such stamps were now known and had been 

 noticed by various authors, among them the late Sir James Y. 

 Simpson. 2 



Dec. i8th, 293rd meeting. Mr. Galton communicated 

 some results of a recent enquiry into the difference in the 

 power of mental imagery in various classes of persons. This 

 power is not necessarily associated with ability, is more 

 developed in females than in males, and shows a strong 

 tendency to hereditary transference through both sexes. 

 A small percentage of persons invariably pictured numerals 

 in definite diagrammatic forms, and these were described 

 and delineated in letters from them which he produced. 

 They stated that each numeral had its definite place on 

 the diagram and could be thought of only in that one. The 

 diagrams were invariably the same, and had been so as 

 far back as they could remember. 



1880. Jan. 2Qth, 294th meeting. Professor Maskelyne 

 referred to a correspondence in the Times 3 about the 

 artificial production of diamonds by Mr. Mactear, of the 

 St. Rollox Works, Glasgow, who had supplied him with 

 some of the material, a crystalline dust, no piece being 

 larger than a very small pin's head, with which he had 

 experimented. It could not scratch sapphire or even 



1 Copies of the lettering are given in the Minutes, and an impression in 

 sealing-wax of one of the stamps. 



2 Monthly Journal of Medical Science, January and March, 1861. 

 G Dec. 3ist, 1879, and subsequent numbers. 



