Notes . 
561 
Globulin also produces changes in twenty-four hours, but to a less 
marked degree than egg-albumin. Food passes into the tentacle 
between the lateral walls of the cells, and secretory products pass 
through the apical walls, thus producing an appearance of striae in the 
food which is in contact with the tentacles. 
Fibrin is digested slowly, and changes similar to but generally less 
pronounced than with egg-albumin are seen. 
Milk is absorbed rapidly and completely. The morphological 
changes are less marked than with any of the above-mentioned foods. 
The cell-plasm remains basophil throughout. 
Nuclein produces almost no effect ; the tentacles do not bend in, 
and do not secrete more copiously than before. No cytological changes 
are produced except very slight vacuolation of the cell-plasm. All the 
colour reactions are the same as those of controls. 
Nucleic acid produced rapid bending in of the tentacles, and ex- 
tremely copious secretion. The leaves reopen in one to three days, 
and although the quantity of nucleic acid given is not perceptibly 
diminished, there are great histological changes, consisting in an 
almost complete disappearance of the cytoplasm (which remains 
basophil throughout), and of the nucleoplasm. The basophil chromatin- 
segments remain unaltered. 
Calcium phosphate produces appearances very similar to those after 
feeding with egg-albumin, but the cytoplasm remains basophil. 
Control leaves, after the application of all the above substances, 
reopened in a perfectly healthy condition, as determined by their 
naked-eye appearances while living, and their microscopic structure 
after fixing by different methods. 
LILY H. HUIE. 
A POTATO-DISEASE. — I have for some time past had occasion 
to recognize here and there, in various parts ol England, a potato- 
disease which is not due to Phytophthora , and which has often been 
ascribed to bacteria. During the past two years my attention has 
been especially directed to testing its bacterial origin, and I am 
convinced that it is not due to bacteria, but to a true hyphomycetous 
fungus. 
Without going so far as to say there is no bacterial disease of the 
potato, I wish to express the conviction that the alleged cases of such 
