64 
The President's Address. 
Ligamentum Nuchse of tlieGiraffe/' (Read April 25th_, 1849. 
' Tr. Mic. Soc. Lond./ vol. iii, p. 45.) 
13. On the Scales of the Viviparous Blenny^ Zoareus 
viviparus.'" (Read January 15tli, 1851. ^Tr. Mic. Soc. 
Lond./ vol. iii_, p. 136.) 
14. On the Structure of the Raphides of Cactus enneago- 
nus/' (Read January 28th, 1852. 'Tr. Mic. Soc. Lond./ 
n. s., vol. i, p. 20.) 
15. '"^On the presence of Eungus of Masses of Crystalline 
Matter in the interior of a living Oak Tree.^^ (Read January 
26th, 1853. ' Tr. Mic. Soc. Lond./ n. s., vol. i, p. 72.) 
16. " On the Minute Structure of a peculiar Combustible 
Material from the Coal Measures of Torbanehill, near Bath- 
gate, Linlithgowshire, known in commerce as Boghead Canal 
Coal.'' (Read November 23rd and December 21st, 1853. 
' Tr. Mic. Soc. Lond./ n. s., vol. ii, p. 34.) 
17. " Observations on the Structure of the White Filamen- 
tous Substance surrounding the so-called Mealy Bug {Coccus 
vitis) of the Vine.'' (Read January 14th, 1857. 'Tr. Mic. 
Soc. Lond./ n. s., vol. vi, p. 1.) 
The high position he attained, and the honorable estima- 
tion in which he was held by all cultivators of science, were 
the justly merited reward of his untiring industry and steady 
perseverance, to which alone he owed his success. His loss 
will be severely felt by all interested in microscopical pursuits, 
but it will be especially felt by the members of his own pro- 
fession, who were continually applying to him for his opinion 
on doubtful questions of physiology and pathology, and the 
various matters in which the microscope is applied to practical 
medicine, and to whom he was at all times ready and willing 
to afford advice and assistance. His lectures, addressed to 
a class principally composed of students and practitioners in 
medicine, were especially interesting for the practical bearing 
of his remarks, and illustrations as applied to medicine. His 
knowledge on all subjects in the investigation of which the 
microscope is used was extensive, varied and accurate, and, 
what is of hardly less importance, it was ever at command ; 
he was never at a loss ; and though cautious and sometimes 
slow in giving an opinion, his apparent hesitation was occa- 
sioned rather by the abundance than deficiency of information. 
He was endowed with a rare combination of qualities, the 
exercise of which made him the accomplished microscopist he 
confessedly was. He was thoroughly familiar with the prac- 
tical use of the instrument, dexterous and delicate in manipu- 
lation, singularly skilful in preparing objects for examination, 
diligent and patient in research, sagacious and cautious in 
