OF INTEREST TO TEACHERS. 



95 



More lamentable than the misconception of facts is the great 

 lack of appreciation on the part of the lecturer of the spirit and 

 point of view of every sincere investigator in science. This is 

 shown, for example, where the author speaks of Huxlev's " dis- 

 comfiture " because the real nature of bathybius was discovered ; 

 of his " reluctantly " and " mournfully " giving up the bioplast 

 theory, and of Ritter's studies in deep sea fauna being " trouble- 

 some " to the evolutionist (p. 17). 



We have given so much space to this address in the hope that 

 the Teachers' notes are read by teachers, and especially bv 

 young teachers, who have been prevented by professional duties, 

 or otherwise, from keeping abreast of recent or current literature, 

 and who might be led into the erroneous notion that scientists 

 are beginning to or alread\' have abandoned the theory of evolu- 

 tion. The suggestion is that the teacher should not waste too 

 much time in reading elementary text-books, nor " popular " books 

 and magazine articles on scientific subjects, but onlv standard 

 writings. Above all should the young teacher or botanist avoid 

 too much reading of purely theoretical and abstract discussions of 

 such questions until he is thoroughly grounded in the facts, the 

 only true basis of any theory. 



Regeneration in Roots. — The following notes are taken from 

 a review of Nemec's Studien uber die Regeneration, in Xaturc, 

 for December. 1906. 



" It is well known that if the tip be removed from a growing 

 root a new apex is commonly dilTerentiated, growth in length 

 commencing once more when the new tip has been completely 

 formed. The objects of Dr. Xemec's investigation have been to 

 endeavor to throw some light on the nature of the process of 

 regeneration itself, the causes that initiate and determine its occur- 

 rence, and the meaning of the physiological events that are as- 

 sociated with it. The methods adopted were extremely simple. 

 The tips of growing roots, chiefly of seedlings, were injured in 

 various ways by making incisions into the region about the apex, 

 and the leactions that ensued were carefully followed and com- 

 pared. 



