68 



ME. G. J. ROMANES — EXPERIMENTS ON 



her manner was suggestive o£ great uncertainty whether or not 

 she was on my track. 



9. — I walked the park in new shooting-boots, which had never 

 been worn by any one. The bitch wholly refused to take this 

 trail. 



10. — I walked the park in my old shooting-boots, but having 

 one layer o£ brown paper glued to their soles and sides. The 

 bitch was led along my track, but paid no attention to it till she 

 came to a place where, as I had previously observed, a small 

 portion of the brown paper first became worn away at one of my 

 heels. Here she immediately recognized my trail, and speedily 

 followed it up, although the surface of shoe-leather which 

 touched the ground was not more than a few square milli- 

 metres. 



11. — I walked in my stocking-soles, trying first with new 

 cotton socks. The bitch lazily followed the trail a short distance 

 and then gave it up. I next tried woollen socks which I had 

 worn all day, but the result was the same, and therefore quite 

 different from tliat yielded by my shooting-boots, while more 

 resembling that which was yielded by my bare feet. 



12. — I began to walk in my ordinary shooting-boots, and when 

 I had gone fifty yards, I kicked them of£ and carried them with 

 me, while I continued to walk another three hundred yards in 

 my stocking-soles ; then I took off my stockings, and walked 

 another three hundred yards on my bare feet. On being 

 taken to the beginning of this trail, or where I had started 

 in my shooting-boots, the bitch as usual set off upon it at 

 full speed, nor did she abate this speed throughout the whole 

 distance. In other words, having been once started upon the 

 familiar scent of my shooting-boots, she seemed to entertain no 

 doubt that the scent of the stocking-soles and of the bare 

 feet belonged to me ; although she did not clearly recognize them 

 as belonging to me when they were not continuations of a track 

 made by my shooting-boots (10 and 11). 



13. — I requested a gentleman who was calling at the house, 

 and whom the bitch had never before seen, to accompany me in 

 a conveyance along one of the carriage-drives. At a distance of 

 several hundred yards from the house, I alighted in my shooting- 

 boots, walked fifty yards beside the carriage, again entered it 

 while my friend alighted and walked two hundred yards still 

 further along the drive. The bitch ran the whole 250 yards at 



