"irSllTuTriff ] of a student of Heterogmuj, 103 
May 29th. — A few monads. 
„ dOth. — A large number of Paramoecia. 
„ 3 Is^.— Dried up. 
The following extracts from notes taken at the time of obser- 
vation. 
A^ril 15th, 1868. — In water containing Lyngbya I witnessed the 
vacuole changing its position in Euglena cells. 
April 28th. — Observed a green zoospore (Euglena), in a fluid con- 
taining Lyngbya, change its shape, and the size and position of its 
vacuole in the slow way of an Amoeba ; at times becoming almost free 
from colour. Motion, slowly revolving on its axis ; no cilia. 
Another green zoospore, with amoeboid change. 
April 15th. — Numerous small zoospores in Lyngbya water, each 
having a delicate green bag of chlorophyll rolling about in the cavity. 
Witnessed two or three of the spots in Paramoecium coalesce into 
one, and instantaneously disappear, as if by contraction of the cell- 
wall ; this I have frequently verified. 
May 6th. — Found a Paramoecium in Lyngbya water (April 27th), 
containing several green Gonidia or chlorophyll particles. 
May 11th. — Saw a Paramoecium burst in water enough to float 
away in a granular stream. This I have frequently observed, but the 
bursting always seemed due to the evaporation of the water used to 
float the object. 
May 20th. — Specimens of Paramoecium observed in Lyngbya water 
(put up May 11th). 
May 20th. — I observed these changes : a globular and elongated 
Paramoecium first attached, then separate, and finally the envelope of 
the globular body seemed to burst, and the contents became absorbed 
in the elongated object, and thus the two became one Paramoecium. 
Ju7ie 12th. — 'Watched a small transparent body (Euglena) change 
form from oval pyriform to globular. 
Aug. 20th. — In Lyngbya water (May 11th) saw numerous small 
bodies (Euglena), all transparent. 
May 2^rd. — Witnessed two Paramoecia struggling together for 
several minutes. 
April 11th. — Saw two transparent Paramoecia coalesce to form one. 
April 21st. — Among other forms of Paramoecium found, also a very 
large number of Convallaria. 
May 7th. — Saw Paramoecium from Lyngbya liquid (April 27th) 
change form ; also another. 
May 4:th. — Found a ring of Euglena formed around the upper edge 
of a bottle, into which Lyngbya was put April 27th. 
May 6th. — ^Witnessed very slow changes in Euglena. 
Saw Euglena of all shades, from green to colourless, in Lyngbya 
water (put up one month). 
May 10th. — Found Euglena with red spot in Lyngbya water 
(April 27th). 
May 11th. — Saw specimens of Euglena resembling largo cells of 
Oscillatoria. 
