NOTES AND MEMORANDA. 
349 
which are placed around the terminal branches, are sometimes so 
numerous, that their ensemhle presents an aj)pearance similar to that 
of the terminal arborization of a little motor plate. 
These new forms of nerve terminations all present this peculiarity, 
of only being found on nerves destitute of myeline, although these 
always arise from nerves with myeline. In the snake, these fibres 
without myeline may even have a very long course. 
In the case in which the nerve terminates in the muscle by a well- 
developed plate, never more than a single plate is observed for one 
whole muscular fibre ; when, on the contrary, we deal with the 
terminations which we have just described, we generally meet with 
several nerve terminations on the same muscular fibre. And in the 
snake their number may even be from six to seven. 
A more detailed work, accompanied with plates, will shortly be 
published.* 
Observations on Saprolegniece. — Mr. Frank B. Hine, B.S., has 
recently studied this group, specimens of Menobra^iclms lanceolatus 
kept in a tank having been attacked by a form which he places under 
the genus Saprolegnia. After defining the Saprolegniem as “ aquatic, 
parasitic, nearly colourless plants, appearing to the unaided eye 
merely as a light greyish or white cushion-like mass of fine filaments,” 
and describing the apjDearance of the fungi and their mode of develop- 
ment (with 4 plates), he gives some details as to the rapidity of their 
development. 
“ In studying, and especially in growing these forms, one can but 
notice the rapidity with which they develop, especially under favour- 
able conditions. Illustrating this point, I introduce the following 
table, which embraces the results of timing the growth of a young and 
thrifty filament under a magnifying power of 200 diameters. For 
the first hour, observations were taken every five minutes; during the 
second, every ten minutes ; after which the time varied. The first 
column represents the time of measurement, and the second the 
length of filament. 
Table showing Rapidity of Guowth. 
h. m. 
I^ength, 
h. in. 
Length. 
9 7 
5 
mm. 
10 12 .. 
91-2 mm. 
9 12 
11-1 
57 
10 22 .. 
.. 110*3 „ 
9 17 
16 
55 
10 32 .. 
.. 125*1 „ 
9 22 
22-3 
55 
10 42 .. 
.. 137*3 „ 
9 27 
28*9 
55 
10 52 .. 
.. 149 „ 
9 32 
35*2 
55 
11 2 .. 
.. 169*8 „• 
9 37 
41 
55 
11 22 .. 
.. 208*4 „ 
9 42 
47*5 
55 
11 32 .. 
.. 221*7 „ 
9 47 
54*7 
11 42 .. 
.. 231*1 „ 
9 52 
62*3 
55 
11 52 .. 
.. 241 „ 
9 57 
70*1 
55 
12 2 .. 
.. 241 „ 
10 2 
78*1 
55 
From these data it will be seen that growth for the first hour 
averaged 6*5 mm., for the second 7*64 mm., and for the third about 
* M. Tschiiiew, in ‘ Comptes Rcudus,’ vol. Ixxxvii. p. 60-1. 
