1919.] The Sixth Indian Science Congress. cili 
move the defects, as suggested to the writer, were conducted during the 
current year and the altered method explain 
e experiments tried last year in pots, w with different kinds of seeds 
> Asami (cg marco were tried in a few rows of each in the field with 
sults as obtained in pots last year. e root system of 
plants ‘germinating from s in different positions (especially of cotton) 
ined and found to be the cause of unevenness of plants in 
different sioniti ons. 
Some foreign insect pests which we do not want in India.— 
By K. R KRISHNA IYER. 
me ee pmiee of frequent and rapid communication between coun- 
ntry. This 
a brief list of some of the most important foreign insects which w 
would do well to know aanthind about, and w = _ Sheepmae a our 
Feb to keep out. The most important of rsa e San 
scale, the cotton boll args the Codlin Sante: as artisan 
fount fly and the grape Phyllox 
Notes on a Moringa stem borer.—By T. V. SUBRAMANIA 
IvE 
The ‘paper ae with the life-history of a longicorn beetle boring on 
the ign baler _— eee: pterygosperma). The insect has not yet 
been se 
when reared out at the insectary was found to be this beetle. ter- 
wards a pair of these beetles were caught during copulation and made to 
lay eggs in captivity and the life-history was completely studied. 
insect is not a serious pest but it is seen occasion nally scraping away the 
bark of the plant when an adult and boring in moringa twigs during its 
arval stage. 
The biological determination of the relative availability 
of different nitrogenous organic manures in black cotton 
soil.—By F. J. Puymen and D. V. Bat. 
1. The relative renin ps es common oil cakes used a 
have been determined by considering the Seas at cre “the aseacaihs Pahiny 
soil of the Deccan 
3. Excluding ‘oil free tili cake, karanja and cotton cakes appear by 
to be" the most quickly available and castor cake is not much tnferior 
them 
4. Tili cake is not quite so active, although the nitrogen nitrified 
v8 OF dhe compares favourably with - ae = other cakes 
Rese e various poner —_— riment with the rons eg 
Ait sars the cea so far as its nitrifiability 
roa ne ar soil is pcebiesa 
. The nitrogen in m ua e is neither ammonified nor nitrified to 
any appreciable extent during a period of 8 w eeks. 
