202 DR. GRIFFITH, ON THE MICROSCOPE. 
results may be kept in museums of small size. All other 
inquirers are obliged to arrange their specimens in extended 
cases, but the microscopist can exhibit all his treasures in 
a very small space. 
Following the old systematic view, Dr. Griffith begins 
with vegetable structures, and passes on to those of animals. 
In his third chapter he speaks of vegetable tissues and 
elements ; and if he were a professed botanist instead of a 
microscopist, we might join issue with him in regard to the 
result of his observations. From vegetable elements he passes 
to vegetable organs. Here we find a very good account of the 
various organs of plants. From the higher plants in the 
fourth chapter, we pass, in the fifth, sixth, seventh, eighth 
and ninth chapters, to an account of the various structures 
found amongst ferns, mosses, algze, lichens and fungi. It is 
impossible to criticise all the information here given. Dr. 
Griffith has, with a respectful regard to the memory of his 
distinguished colleague and co-editor in ‘The Micrographic 
Dictionary,’ reproduced here in a more elementary form what 
was recorded there, The late Professor Henfrey had studied 
with more than ordinary diligence the structure of the 
Cryptogamic forms of plants, and he has left in his researches 
amongst these humble forms of the vegetable kingdom a per- 
manent record of his love of natural objects and powers of 
observation. 
Passing down the vegetable scale of existence, we diverge 
from plants into animals at the Fungi. Animal elements and 
tissues follow the Fungi in a tenth chapter. It would be 
invidious to criticise what is done so well; yet we cannot but 
feel that in these elementary chapters Dr. Griffith has 
opinions with which we do not wholly agree. At any rate, we 
freely admit he may be as right as ourselves, and we commend 
his observations to our friends who are beginning to stuay 
minute structures. Starting from the great broad basis of 
universal animal structure, we have, following, particular 
accounts of animal families. We have no particular micro- ~ 
scopic account of the Mollusca; but why they have offended 
Dr. Griffith we are at a loss to discern. We feel inclined at 
once to supply a chapter on the microscopic interest of 
Mollusca. The teeth of the Gastropoda, &c., the glands of the 
Lamellibranchiata, and a host of other phenomena, occur to 
us. But we must follow Dr. Griffith. Chapter XI is devoted 
to Articulata. Chapter XII to Radiata; and as this tribe 
has been given the go-by of late, we may as well say the 
whole family is treated by Dr. Griffith with great contempt, 
and dashed off in two pages. The Protozoa, being especially 
