in the uoighbourliood of liobarl, illustrating the lecture 

 by diagi'anis and some forms under the microscope, after 

 which instruction was given in the elementary stages of 

 microscope technique. 



On October 16 Mr. H. M. Nicholls gave a lecture at 

 the University Laboratorv on the life historv of "Venturia 

 inajqualis, ' causing the disease of apples comiiionlv known 

 as black spot. The lecture was illustrated ])v lantern and 

 microscope slides. Specimens of the injury done to apple 

 trees by red spider were exhibited by INlr. A (). Green. 



