cate ito Nara 
of preparing meristematic tissues for observation. It must- 
6 BOTANICAL GAZETTE. [ January, 
or mixtures of these with other substances. In such liquids 
fresh material should be kept for some time, and then only 
full-grown parts is very useful, and in several instances By 
have succeeded in it very well. 
y researches, however, speedily convinced me that the ~ 
proper sphere for the application of the imbedding method, — 
especially by those botanists who try it for the first time, 1S _ 
to be found in meristematic tissues, the cells of which con- 
tain but little cell-sap, a thin cell-wall, and much protoplasm, 
and in these respects may be compared to animal tissues- 
In these cases I have met with signal success, and it seems 
that this is not wholly without importance, as it is precisely 
with growing points of stems and roots that the advantages 
of imbedding are invaluable. I do not mean to assert that” 
in this manner results are to be obtained which are abso- 
lutely not to be had by having recourse to the usual methods 
be admitted that perseverance and patience have effected _ 
much in these matters. But it is certain that by this method 
the same and better results may be obtained with the greates 
ease, which formerly were a ee only by comparative 
few observers, with much exertion and loss of time... Th 
every student may see many things which he ‘otherw 
would not have seen: longitudinal sections accuratel 
through the median line of growing points, a series of con- 
secutive transverse sections of the same objects, etc. /*M* 
he may have such specimens in profusion, whilst every Om® 
who has been engaged in these researches knows that ! 
following the usual methods one is often compelled to be com- 
