602 General Notes. [June, 
_ . Tue CONTINUITY oF PRoTOPLASM IN MANY-CELLED PLANTS.— 
A paper recently published in Mazure, by Dr. Schaarschmidt, con- 
tains a summary of the results of investigations as to the conti- 
nuity of protoplasm in the many-celled plants. From this it ap- 
pears that the first direct observations were made by Theodore 
Hartig, in 1854, who described the continuity of the protoplasm in 
sieve tubes. This case of continuity confirmed by many observ- 
It has also been shown that protoplasm occurs in intercellular 
spaces; and now Dr. Schaarschmidt announces the discove 
inter-lamellar protoplasm, that is of a thin layer which occupies 
the position of what has been long known as the “ middle lamella ” 
of the cell wall 
The “general results” are given by the author, as follows: 
(1) “ The protoplasts of all the tissues in united cells are in direct 
connection by means of finely attenuated protoplasmic threads. 
| _ traverse directly the cell wall. By these threads is the communi- 
~ Cation between the connective process which occupy the pit-cav- 
ao ity from both sides directly established. 
