Miscel aneous Intellagence. 231 
as when the Black Cherry or Rum Cherry is referred to Prunus 
Virginiana instead of £. serotind. A. G. 
20, On a new method of observing the rate of growth in plants ; 
ratus is completely under control of the observer. G. Le 
21. On the general occurrence of Starch in Sieve-cells ; b D : 
Brrost (Bot. Zeit., May 16th.—A brief recapitulation of previous 
Pi d a 
ecount of 
recent original observations. In all plants examined, hen a 
i ‘odine in iodide of 
to the method of Bohm-Sachs (that is, heating with ¢ 
potash, washing, and neutralization with acetic acid, and then 
addition of a dilute tincture of iodine) the starch granules of the 
granules of adjacent cells have become broken do to a paste 
If the sections are placed in dilute acids (hydrochloric, or nitric) 
granules are colored blue, or deep violet. 
swell up, but still preserve their spheric 
other granules have become a paste. . an 
_ 22. The influence of Temperature on the development of Penicil- 
Vv; 2 Mould.——Prof. WisNER presented to the 
lenna Academ h April, memoir on 
oe ee Bot, Zeit., May 30th. The 
tw i 
germinat f din) occu 
; ion of the spores (cont ia) a eee ge 
40°C. Near the upper and 
lower limits, the germination, 
. * 4: * 
production of spores were uncertain. The rapidity in the rate of 
ion, the growth of mycelium and the 
A 
