H2 ANIMAL MECHANISM. 



sun-red each other, in each of the persons supposed to be 

 walking. 



< >t' tin' niiili'i'. Let ns take the simplest case, iii which the 

 INNO jiersons walking steadily go through the same movements 

 at the same time. If \\ e represent, by the notation before 

 employed, the movements of these two men, placing at tho top 

 the notation which belongs to the foremost, and below it thai 

 of the hindmost, we shall have the following iigure : 



Fio. 38. Notation of a horse's amble. 







The footfalls of the right and left foot being produced at 

 the same time by the person walking in front and by him who 

 follows, must bo represented by similar signs placed exactly 

 over each other. Thus, in the paces of the horse, this 

 agreement between the movements of the. fore and hind limbs 

 belongs to the amble. The notation (fig. 38) will be that of 

 a horse's amble ; the upper line referring to the movements 

 of the fore quarters of the animal, and the lower line to the 

 hind limbs. 



The standard definition is the following: "The amble is a 

 kind of pace characterised by the alternate and exclusive 

 action of two lateral l>i/ilx ." Authors are entirely agreed on 

 this point. Let us add that in the amide the ear perceives 

 onlv tn-ii In-lit^ at each pace, the two limbs on the same side 

 striking the ground at the same instant. In the notation 

 tln^r u\o sounds are marked by vertical lines joining the two 

 synchronous impacts. 



In the ami ile the pressure of tho body on the ground is 

 said to be Idtrntl, as the t\vo limbs on one side only are in 

 contact with the ground at the same time. 



(if the irdlliinif /i/tci'. -According to the defiailion of the 

 greater number of authors, the n;ilkinij ;n/<r consists in an 

 eijiial succession of imp ids of the t'.nr feet, which strike the 

 ground in the I'olloNxing order: if the right font be considered 

 as moving lir>t, \N e shall have the following succession r'ujlit 

 fore /""', I'H hind foot, lfftjore-/oot t and then iujht hind-foot. 



