188 SECTIONAL ADDRESSES 
due to insufficiency of available sulphur in the soil; it can be speedily 
remedied by the application of sulphur or salts containing sulphur. 
Several of the functional diseases of apples in storage, some of which are 
caused by respiratory disturbances, have been investigated by plant 
physiologists at the Low Temperature Research Station, Cambridge, and 
by pathologists in the United States and Australia. I will refer briefly to 
one of these troubles. For many years large losses had been incurred in 
the importation of apples from the Antipodes into this country, owing to 
the disease known as ‘ brown heart,’ which is characterised by a brown 
discoloration of the flesh between the skin and the core. Kidd and 
West 78 shewed that this condition was brought about by disturbances in 
the respiration of the cells of the apple owing to the accumulation of a 
high percentage of carbon dioxide in the atmosphere surrounding the 
fruit in the holds of the ships. Nowadays greater care is taken than 
formerly to ensure adequate ventilation in the holds of ships carrying 
cargoes of apples, with the result that ‘ brown heart’ has been practically 
eliminated. Another kind of plant injury that is receiving renewed 
7S es res a . 
attantian jo that aasen SS al ea 2 (eee Ts 2 
British Association, Norwich, 1935. 
SECTION L.: PRESIDENT’S ADDRESS: NOTE. 
Page 190. Mr. Wells has informed me that the paragraph 
which refers to his book ‘“‘ The Shape of Things to Come” 
misrepresents it. I am sorry if this is so, though after re- 
reading the book I cannot see that the paragraph misdescribes 
what is to be found there. But I am content that our readers 
should judge for themselves, and I am therefore anxious that 
his disclaimer should be known to them.—A. W. P.-C. 
Par Orn 
vi vutauy u16 pemerar-anuullat idly palMologicdl MNvestigations are Of ~~ 
interest to the pure botanist. Furthermore, just as researches in medical 
science have added greatly to our comprehension of the attributes of 
protoplasm so does plant pathology provide an instrument for increasing 
our knowledge of general biological principles. 
78 Dept. Sci. and Indust. Res., Food Investig. Bd., Spec. Rep. No. 12, 1923. 
79 Oxford Forestry Memoirs, No. 16, 1934. 
