August 16, 1901.] 



SCIENCE. 



235 



biological sciences, Professor Minot, of Har- 

 vard University. The Association is prom- 

 ised a welcome by the Governor of the 

 State, the Mayor of Denver and other dig- 

 nitaries, and the people of the city are noted 

 for their hospitality. 



A few words in regard to routes may be 

 of service to members in the East. The 

 way to Denver is either by Chicago or St. 

 Louis, the former being the quicker. Chi- 

 cago may be reached from New York in 

 about twenty- four hours by the Pennsylva- 

 nia and New York Central Railways. For 

 example, a train leaving New York at 7:55 

 A.M. by the Pennsylvania reaches Chicago 

 at 7:45 the next morning, or a train leaving 

 New York at 5:30 P. M. by the New York 

 Central and Lake Shore reaches Chicago at 

 4:30 the next afternoon. The best train 

 from Chicago leaves at 10 A. M. by the Chi- 

 cago and Northwestern ; at 1 P. M. by the 

 Rock Island Route and 4 P. M. by the Bur- 

 lington, reaching Denver at 1:40, 4:45 and 

 6:30, respectivelj^, the next afternoon. 

 Those who leave Chicago on Saturday, the 

 twenty-fourth, by one of these trains will 

 doubtless travel in good company. The 

 rate from New York to Denver and return 

 at one and one-third fare would be about 

 $65 ; the ordinary fare to Chicago and re- 

 turn is $40, and the return ticket from Chi- 

 cago to Denver is S31.50. The latter method 

 is not much dearer than the former and 

 may be cheaper to members living west of 

 New York. It is more convenient, as the 

 tickets from Chicago may be purchased as 

 early as August 10 and are good for return 

 until October 31, and the route to Chicago 

 may be varied and a stop may be made at 



Buffalo or elsewhere. The headquarters of 

 the Association are at the Brown Palace 

 Hotel, and those wanting rooms should 

 engage them in advance. There are, how- 

 ever, a number of good hotels at Denver. 

 ' Everyone knows that Denver is one of 

 the great centers for excursions of scientific 

 and general interest. The geologists, under 

 the leadership of Professor Van Hise, have 

 planned a ten days' excursion before the 

 meeting. Other excursions of interest to 

 chemists, engineers, geologists, zoologists, 

 botanists, anthropologists and indeed to all 

 members of the Association may be made 

 during the meeting or at its close. It is 

 sufficient to mention Pike's Peak, the Gar- 

 den of the Gods, and the Grand Canyon of 

 the Colorado, to all of which excursions 

 have been planned. The trip to Colorado 

 should be made by everyone and should be 

 made now by all members of the American 

 Association for the Advancement of Sci- 

 ence. 



BEGENEBA TIONAND LI A BILITY TO INJUB Y. * 

 There is a widespread belief amongst 

 zoologists that a definite relation exists 

 between the liability of an animal to in- 

 jury and its power of regeneration. It is 

 also supposed that those individual parts of 

 an animal that are more exposed to acci- 

 dental injury, or to the attacks of enemies, 

 are the parts in which regeneration is best 

 developed, and conversely, that those parts 

 of the body that are rarely or never injured 

 do not possess the power of regeneration. 



Not only do we find this belief implied 

 in many ways, but we find this point of 

 view definitely taken by several eminent 



* One of a course of lectures on ' Eegeneration ' de- 

 livered at Columbia University, and shortly to be 

 published in the Columbia University Biological Series. 



