si a Mr . Home on the Mode of breeding 
middle portion of the oviduct, there can be no doubt ; but the 
exact part in which the jelly of the frog is formed, has not 
been ascertained, which led me to make the following obser- 
vations respecting it. 
In some frogs that were kept in a damp cellar through the 
winter, no visible change took place in the ovaria or oviducts, 
although frequently examined, by immersing parts of them 
in water at different temperatures, till the 10th of February ; 
at that time a portion of the oviduct, when immersed in water 
at 8o°, swelled out so as to double its size, and when the water 
was at 120° expanded very rapidly. On the 25th of February 
the oviducts were seen to enlarge, and on slitting them open, 
the internal surface was smeared over with a ropy fluid. A 
portion of oviduct two or three inches long, in water heated to 
120 0 , swelled out into a mass of transparent jelly which filled 
a half pint tumbler, and all traces of the coats of the oviduct 
were lost. 
Upon shewing this jelly to Sir Joseph Banks, he said that 
it very much resembled what he Tad seen when a boy, in the 
country during the winter months, upon the ground, and on 
the boughs of trees, called star-shot jelly, from being sup- 
posed to be formed by falling stars ; and that it would be 
worth while to compare them together, and determine whether 
the common opinion mentioned by Pennant, which Sir Joseph 
Banks had always believed, was correct. The jelly is said to be 
brought into this state, by the frog having been swallowed by 
a bird, and the warmth and moisture of the stomach, making 
the jelly in the oviducts expand so much, that the bird is 
obliged to reject it by vomiting. Sir Joseph Banks procured 
some star-shot jelly from Lincolnshire, and Mr. W. Brande 
