b6 
The Queensland Naturalist. 
April, 1928 
the day by covering tho plants for a few hours ear day 
it should be possible to produce good heads of cabbage 
and lettuce in summer in Brisbane without the risk of 
their shooting up into flower. 
REFERENCES. 
BRANDIS, D. — Journal of the Linnaean Societv (Bot ) , 
31, p. 6, 1895. 
BROWN, W. H. — The Vegetation of Philippine Moun- 
tains, Manila, 1919. 
GARNER, W. W., and ALLARD, H. A. — Effect of the 
relative length of day and night and other factors of environ- 
ment 011 growth and reproduction in plants. Jour. Agr. Re- 
search 18, 553-606. 1920. 
GARNER W. W., and ALLARD, H. A. — Photoperiodism, 
the response of the plant to relative length of dav and night. 
Science 55, 582-583, 1922. 
GARNER, W. W., and ALLARD, H. A. — -Further studies 
in photoperiodism, the response of the plant to relative length 
of day and night. Jour. Agr. Research 23, 871-920. 1923. 
GARNER, W. W., and ALLARD, H. A. — Localization of 
the response in plants to relative length of day and night. 
Jour. Agr. Research 31. 55 5-56 6, 192 5. 
JOHNSON, D. S. — The effect of Insolation on the distri- 
bution and on the developmental sequence of the flowers of 
the Giant Cactus of Arizona. Ecology V., 70-81, 1924. 
MOLISCH, IT- Das Warmbad als Mittel zum Treiben 
der Pflanzen, Jena, 1909. 
WANSER, H. M. — Photoperiodism in wheat, a deter- 
mining feature of acclimatization. Science n.s. 5 6. 313-315, 
1922. 
0 
NOTES ON EGG-LAYING OF THE LONG-NECKED 
TORTOISE (Chelodina longicollis). 
Br Mrs. S. CURTIS, Upper Albert River. 
Some little time ago we beard the fowls making a 
fuss, so we went out to see wliat was worrying them. 
Their trouble was a long-necked tortoise who was making 
her way up the incline from the water hole in front of 
our home. Just to find out all we could about her we 
turned her onto her back. This proceeding did not 
please her. and she ejected a lot of water. When we had 
inspected her we turned her on to her feet again, and 
once more a lot of water flowed from her. For a little 
