MAGANLAL L. PATEL 101 
in an ordinary field of Goghari cotton, 188 plants which had round, spherical 
and large bolls. The progeny of each of these plants was sown separately in 
a row, the rows being six feet apart ; from the resulting plants all of which 
did not produce the same characters in the bolls for which they had been 
selected were eliminated leaving those which still gave the characters desired. 
Since that time unit selection among the plants so left has been carried on, 
with the result that since 1918-19 we have a type which has bred absolutely 
true, and which represents a pure line with the following characters. 
The plant of the strain is of a bushy character, and bears a number of 
monopodia varying from one to eight, the most frequent being four to five. 
The leaves and formation of the plant are similar to what is usually found in 
Goghart plants. The special characteristics are :— 
(1) The bolls are spherical and large, with a very marked point at the 
tip. The bolls open well on the plant, and-are fairly uniform in character. 
The average weight of kapas per boll is 2°12 grm. 
(2) The kapas gave a ginning percentage of 45°9 in 1918-19 and 42°5 
in 1919-20. The lint-index (that is to say, the weight of lint in grammes per 
100 seeds) was 4°93 in 1918-19 and 4°82 in 1919-20. 
(3) The seed is rather larger than the average for Goghari cotton, and 
100 seeds weighed in 1918-19, 5°81 grammes. In 1919-20, 100 seeds 
weighed 6°53 grammes. 
(4) The hunt varies in length of staple according to the part of the seed 
from which it is derived. In 1920 the average length was as follows :— 
Centimetres 
Lint on tip of seed 4c By ae lye. 
Lint on middle of seed ae is ae 201 
Lint at base of seed ae sie eeelcol 
The variation in the length of the staple of the lint at the various parts 
of the seed is: (1) at the tip 8°5 per cent. below the mean; ( 2) at the middle 
7 per cent. above the mean; (3) at the base 1°6 percent. above the mean. 
The attached frequency curve shows the extent to which the staple of the 
lint from the middle of the seed varies in a lot of seed of the pure strain. 
The comparative constancy of the staple is shown by the following 
figures, all taken in the middle of the seed. 
Number of measurements made Bes af = 100 
Staple of 1:7 centimetres Sc 5c 5e 1 
Do. 1°8 Do. ae sc we 17 
Doz. 19 Do. = oe ae 14 
Dose 230 meee DOs, : ats ae “iC 28 
Dore 2s! Do. i Se he 20 
Digg, BY Do. as aa ae 13 
Woy 53 Do. hic se AP 7 
