CHAP. XL.] ANTI-WAR DEMONSTRATION. 271 



mal matter in the tusks, teeth, and bones of many of these extinct 

 mammalia, amounting in some cases, as Dr. C. T. Jackson has 

 ascertained by analysis, to 27 per cent., so that when all the 

 earthy ingredients are removed by acids, the form of the bone 

 remains as perfect, and the mass of animal matter is almost as 

 firm, as in a recent bone subjected to similar treatment. It 

 would be rash, however, to infer confidently from such data that 

 these quadrupeds were mired at periods more modern than the 

 fossil elephants found imbedded in similar clayey deposits in 

 Europe, for the climate prevailing in this part of America may 

 possibly have been colder than it was on the eastern side of the 

 Atlantic. At the same time, I have stated in my former &quot;Trav 

 els,&quot;* that all the mastodons whose geological position I was 

 able to examine into, in Canada and the United States, lived 

 subsequently to the period of erratic blocks, and the formations 

 commonly called glacial. I have also shown that the contempo 

 rary fresh- water and land shells were of such species as now live 

 in the same region, so that the climate could scarcely have differed 

 very materially from that now prevailing in the same latitudes. 



During my stay at Boston, as I was returning one evening 

 through Washington-street, I fell in with a noisy rabble of young 

 men and boys, some of whom were dressed up for the occasion in 

 rags, and provided with drums, sticks, whistles, tin-kettles, and 

 pans, with other musical instruments, most of them on foot, but 

 some mounted arid sitting with their faces toward the horse s Gl 

 ass s tail, others with banners, calling out, &quot; Hurrah for Texas,&quot; 

 for they styled themselves &quot;the Texas volunteers.&quot; This I found 

 was an anti-war demonstration, and shows that there is a portion 

 even of the humblest class here, who are inclined to turn the 

 agressive spirit and thirst for conquest of the Washington Cabinet 

 into ridicule. 



June 1. Sailed for England in the Britannia, one of the 

 Cunard line of steamers, the same in which we had made our 

 outward voyage. For several days a white fog had been setting 

 in from the sea at Boston, and we were therefore not surprised 

 to find the mist so dense off the harbor of Halifax that the light- 

 * Vol. i. pp. 51, 55. Vol. ii. p. 65. 



