The President's Address, 
35 
10. ^^Descriptions of New and Rare Diatoms" (series vi). 
By R. K. Greville^ LL.D. (Commnnicated by Mr. Roper^ 
was read May 14t}i ; published in ^ Trans. Mic. Soc./ vol. 
N. S., p. 89). _ 
11. ^^Description of New and rare Diatoms" (series viii) . 
By Dr. Greville. (Also communicated by Mr. Roper^ was 
read Nov. 10th j published in ' Trans. Mic. Soc./ vol. xi^ 
N. S., p. 13.) 
Note, — No. vii of this series was not communicated to this 
Society. It is published in ^ Quart. Journ. Mic. Soc./ vol. 
ii, N. S., p. 231. 
13. ^^On some New Species of Diatomacese." By J. 
Staunton^ Esq. (Read June 11th.) Twelve slides illus- 
trating the paper were at the same time presented^ and are 
added to the collection of objects. 
13. On Fungus Destruction of Lozenges in a dry At- 
mosphere." By F. M. Rimmington, was communicated by 
Mr. TufFen West. (Read June 11th; published in 'Trans. 
Mic. Soc./ vol. X, N. S., p. 103.) 
The point of interest^ as remarked by Mr. West^ is the 
great amount of deliquescence caused by the fungus in a 
perfectly dry atmosphere. 
B. Vibrio Tritici. — Some interesting facts in connection 
with these animals were mentioned to the Society at the last 
meeting, by Mr. H. Deane. The long time they maintain 
their vitality is well known; how long is not determined. 
Mr. Deane has had some diseased wheat for ten years_, in 
which, when last examined^ a year ago, the animals were 
found alive and in full activity. He also mentioned a 
remarkable fact known to him^ viz., that on a particular piece 
of land, whenever wheat is grown, it is always infested with 
vibrio, no matter what the length of time since the previous 
wheat crop, or what crops have been grown in the mean- 
time. 
Having completed this retrospect of the year, and given a 
short account of the thirteen papers which have been read at 
our ordinary meetings, it only remains for me to congra- 
tulate you on the present state of the Society, and its pro- 
spects for the future, and to thank you for the kind support 
and assistance uniformly afforded me during the two years I 
have occupied the chair I am shortly to resign to the gentle- 
man appointed to succeed me, — one whose thorough ac- 
quaintance with the mechanical and optical properties of the 
microscope, whose familiarity with all the details of microsco- 
pical investigation, and whose scientific and general attain- 
ments, eminently fit him for the office of President. 
