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year. The report presented by the Excursions Sub-committee 

 was also very satisfactory. 



The President then delivered his annual address, taking for his 

 subject " A Review of Photo-micrography." Some fifty lantern 

 photographs were exhibited. Among the more noteworthy may 

 be mentioned a photograph of a sprig of Spirea, followed by 

 another of more advanced growth, taken without shifting the 

 camera, illustrating an interesting application of the subject to a 

 scientific examination of the microscopical growth of plants ; a 

 number of photographs taken with low powers, some of whole 

 insects, showing the extreme flatness of field possessed by some of 

 the special objectives referred to in the address ; proboscis of 

 blow-fly photographed with an achromat of the highest quality, 

 used with a screen, followed by one of the same preparation taken 

 with a modern apochromat ; several slides of bacteria, some with 

 and some without the use of a contrast screen, exhibiting the 

 great advantage obtained by the use of such a screen in the case 

 of faintly stained preparations ; and, in conclusion, a series of eight 

 photographs of Amphipleura pellwida — the first of an entire valve 

 showing lines from end to end (the lines number some 98,000 to 

 the inch), others showing this diatom in dots taken with blue 

 light by the use of a special apparatus designed by the President, 

 the magnification on the screen being more than 60,000 diameters 

 (nearly 3,000 on the original). 



After the usual votes of thanks to the President for his address, 

 and to the various Officers of the Club, and to members of the 

 Committee for their services during the past year, the meeting, 

 which was extremely well attended, adjourned. 



Journ. Q. M. C, Series II.— No. 60. 



