1 Brs.,1899.] © QUEENSLAND AGRICULTURAL JOURNAL. 189 
TO REDUCE CENTIGRADE TO REAUMUR. 
Centigrade degrees x 4 ; 
5 * = Réaumur degrees, 
EXaMrin. 
The boiling point of Centigrade being 100, what is the boiling point in 
Réaumur’s thermometer ? 
100 x4, . Rae By" : 
5 = 20 xX 4 = 80 degrees, the boiling point of Réaumur, 
TO REDUCE FAHRENHEIT TO RNAUMUR. 
Fahrenheit degrees — 32 x 4 5 
9 = Réaumur degrees. 
EXAMPLE. ; 
The boiling point of Fahrenheit being 212 degrees, what is the boiling point 
of Réaumur P 
212 — 32 x 4 ; ’ 
———9 = 80 degrees the boiling point of Réaumur. 
TO REDUCE REAUMUR TO FAHRENHEIT, 
Réaumur degrees x 9 
4 + 32 = Fahrenheit degrees. 
EXAaMPLe, 
The boiling point of Réaumuris 80 degrees. What is the boiling point of 
Fahrenheit ? 
80 x 9 720 : 
4 + 82> —{~ +82 = 212 degrees, the boiling point of Fahrenheit. 
TO REDUCE REAUMUR TO CENTIGRADE. 
Réaumur degrees x 5 ; 
ee zh —= Centigrade degrees. 
EXAMPLE. 
The freezing point of Réaumur is 0. What is the freezing point of 
Centigrade P 
0x5 en , ; 
—4 = 9, the freezing point of Centigrade. 
- 
THE TOAD. 
ITS VALUE TO THE HORTICULTURIST. 
By A, J. BOYD. 
Ty times past the common toad was looked upon with horror. It was said to 
be poisonous. But it sufficed amongst the ancients, and indeed it is at the 
present day amongst the ignorant sufticing proof of the deadly character of an 
animal, vertebrate or invertebrate, that it should be weird or ugly-looking. The 
toad is undoubtedly ugly, and the Surinam toad is particularly a disgusting and _ 
repulsive looking animal, yet it is perfectly harmless. The little bright-eyed 
Gecko—a flat-tailed lizard, which runs over the walls and ceilings of our 
houses, is equally harmless, and still is looked upon as an animal dangerous to 
touch. The vulgar impression is that strange-looking animals sting. Thus we 
hear of a snake or a lizard or a toad “ stinging’ the person who touches them. 
How easy would it be to dispel any such notions, if people could be induced 
to study a little elementary popular zoology and entomology. How many 
innocent and valuable animals, reptiles, and insects would be saved from a 
cruel and wanton slaughter, if their habits were only studied a little. 
