Fig. 31. 



\iZ 



before A comes 

 to it, as is plain 

 from ob.serviug 

 the track of a 

 horse's feet, the 

 mark of A being 

 upon or before 

 that of B. In the 

 more rapid paces 

 of all animals the 

 centre of gravity 

 is at intervals im- 

 supporteil. 



The feats of 

 rope-dancers are 

 experiments on 

 the management 

 of the centre of 



Fig. 32. 



E 



^B 



gravity. The evolutions of the performer are 



found to be facilitated by holding in his hand a 

 heavy pole. His secarity in this case depends, 

 not on the centre of gravity of hLs body, but ou 

 that of his body and the pole taken together. — 

 This point is near tlie centi-e of the pole, so that, 

 in fact, he may be said to hold in his hands the 

 point ou the position of which the facility of his 

 feats depends. Without the aid of the pole, the 

 centre of gravity would be within the trunk of 

 the body, and its position could not be adapted 

 to circumstances with the same ease and rapid- 

 ity. 



The centre of gravity of a mass of fluid is that 

 point which would have the properties which 

 have been proved to belong to the centre of 

 gravity of a solid, if tlie fluid were solidified 

 without changing in any respect the quantity 

 or an'angement of its parts. 



IMPORTANT TO WOOL-GROWERS. 



A REVIEW OF THE PAST, PRESENT, AND FUTURE STATE OF THE WOOL MARKET. 



The consumption of English Wool during the 

 last twelve mouths has unquestionably been on 

 a larger scale than at any former time. And 

 during the last four or five months the heavy 

 stocks held (in the latter half particularly) la.st 

 year have been very greatly reduced, and have 

 presenti^fl the contrast with last year, that, so far 

 from tlie stocks of Wools of English growth be- 

 ing unusually large, they were probably never 

 known to hr. .so small. The effect which might 

 have natitrally been expected, from the small 

 stocks of English Wools, has been counteracted 

 by two prominent causes : — First, notwithstand- 

 ing the oxlranrdinary increase of the import of 

 foreign Wools in 1844, that of the present year 

 shows an increase over last year comparatively 

 jis great. And. second, some branches of trade 

 in which English Wools are largely used, espe- 

 cially that of Bradford, have been exceptions to 

 (407) 



the general brisk and highly remunerative char- 

 acter of the generalitj' of manufactures. As 

 compared, therefore, with tliis time last year, 

 we conclude the season with probably a small- 

 er quantit}' of Engli-sh Wool on hand, of fonner 

 years' clip, than has existed for many years; 

 I while last year, at the same time, it was some- 

 what larger than usual. 



By tlie accounts which we have this day pub- 

 lished, in our " Monthly Supplement," of the 

 quantities imported from the 5th January to the 

 5th May, we find the following comparison with 

 respect to the imports of Wool : 



Wool imported, Jan. 5 to May 5. 



1843. 1844. 1845. 



lbs. lbs. lb.?. 



7,273,118 10,800,430 14,.'529,27:i 



This is the latest date for which we have any 



