974 



SCIENCE. 



[N. S. Vol. XXIII. No. 600. 



At the time of the recent forestry con- 

 vention at Ottawa, my attention was di- 

 rected to a remarkable growth said to have 

 been found in New Brunswick. Subse- 

 quently a specimen was submitted to me 

 for examination by the Hon. T. G. Loggie, 

 of the crown lands department, in whose 

 museum the original specimen was de- 

 posited. 



The specimen, described as being twenty 

 feet in length, was found to consist of a 

 flattened cord of tissue, with a perfectly 

 normal outer bark like that of the white 

 birch, and within it was composed of cork 

 tissue which had resulted from the rapid 

 transformation of living bark structure. 

 The fact that this cord was attached to the 

 tree by the upper end only, and that it 

 therefore hung altogether free for its entire 

 length, presented a problem of an unusual 

 character with respect to the growth of 

 trees in this latitude; but it is shown that 

 the phenomenon may be accounted for on 

 the supposition that an injury to the bark 

 had given rise to an outgrowth presenting 

 extraordinary rapidity of development, and 

 that the growing tissue was converted into 

 cork as fast as projected. 



'Critical Notes on the Geometridffi of 

 British Columbia, with Descriptions of 

 Fourteen Species,' by Rev. G. W. Taylor. 



Introductory observations on the present 

 state of our knowledge of the group, and 

 review of the work of previous writers. 

 List of the species known to occur in 

 British Columbia, with critical notes on 

 the nomenclature, distribution and life his- 

 tory of each species. Description of forms 

 new to science. Bibliography. 



'Distribution of Bacteria in Canadian 

 Cheddar Cheese,' by Professor F. C. Har- 

 rison, presented by Dr. Fletcher. 



'Legume Bacteria,' by Professor F. C. 

 Harrison, presented by Dr. Fletcher. 



'Studies in Canadian Fungi.' 



(1) 'The Imperfect Fungi,' by John 

 Dearness, communicated by Dr. G. U. Hay. 



(2) 'The Hydnums and their Allies,' 

 by Dr. G. U. Hay. 



'Some Unsolved Problems in Immunity,' 

 by Dr. A. G. Nicholls, presented by Pro- 

 fessor Wesley Mills. 



A short historical resume of the develop- 

 ment of our modern ideas as to the nature 

 of immunity. The two opposing schools 

 and their explanation of the phenomena of 

 the healing of infectious disease. An ac- 

 count of the recent experimental work 

 tending to reconcile their divergent views. 

 Methods by which the resisting power of 

 the animal organism may be increased. 

 Natural and artificial immunity. An at- 

 tempted rational explanation of the proc- 

 esses of healing. 



'On the Sleeping Sickness; with Micro- 

 scopic Illustrations,' by Sir James Grant. 



The recent discovery during the past 

 year of protozoal parasites in the blood of 

 different animals, in addition to many new 

 species of Trypanosoma, is of much in- 

 terest, owing to the close affinity of these 

 discoveries with sleeping sickness, the epi- 

 demic area of which is confined to parts of 

 equatorial Africa. 



BIBLIOGRAPHIES. 



'Bibliography of Canadian Geology and 

 Paleontology for the Year 1905,' by Dr. 

 H. M. Ami. 



'Bibliography of Canadian Zoology, Ex- 

 clusive of Entomology, for the Year 1905,' 

 by Dr. J. F. ■\Vliiteaves. 



'Bibliography of Canadian Entomology 

 for 1905,' by Rev. Dr. C. J. S. Bethune. 



'Bibliography of Canadian Botany for 

 the Year 1905,' by Dr. A. H. MacKay. 



The i^residential address was delivered 

 on the evening of Tuesday, May 22, in the 

 assembly hall of the Provincial Normal 

 School, where all the sessions also were held. 

 Besides giving an excellent review of the 



