The statistics show that the amount of cocoons raised was approxi- 
mately: 1073 1024 
Amount of cocoon per one acre of the mulberry farm.. 280 lbs. 325 Ibs. 
Amount of cocoon per one family engaged in sericulture. 339 lbs. 458 lbs. 
Silkworm Raising for Egg-card 
There were 8,058 silkworm raisers in 1924 (10,790 in 1918) for egg-card 
producing in Japan, and the production of silkworm egg-cards amounted to 
about 27,700,000 sheets, containing eggs laid by 706,563,500 moths. (One 
card usually contains the eggs of 28 moths, although sometimes a card con- 
tains the eggs of 100 moths.) 
The silkworm eggs are divided into two classes: the silkworm eggs, for 
breeding, and the silkworm eggs, for raising cocoons. The former must pass 
the strictest official examinations, the silkworms which produce them being 
inspected in all phases of their growth, namely, as caterpillars, cocoons and 
mother-moths. The latter are mostly made from the cross-breeding method 
and in this case only mother-moths are examined. 
The number of mother-moths used for silkworm eggs was as follows: 
7918 1924 
Number of moths for laying breeding purpose 33,482,912 15,811,156 
Number of moths for laying raising purpose... 948,200,853 698,596,876 
Total. .......... .... .......... 981,683,765 714,408,032 
Raw Silk Reeling 
As aforesaid, raw silk reeling is rapidly losing its character of being a 
domestic industry and is passing into the hands of filatures, although a 
certain proportion of reeling basins are still run by sedentary methods in 
farmers’ families. The following are the official statistics for the year 1918 
and 1924: Number of 
Method of Reeling Year Establishments ~~ Reeling Basins 
1918 4,639 275,760 
Machine reeling............ 1924 3,674 271,141 
1018 206,267 281,977 
Sedentary reeling......... 1-24 142,734 210,476 
1918 44 844 69,003 
Doupion reeling... .... = 21924 51,097 97.577 
1918 255,750 626,740 
Total. ims . 1924 197,505 559,194 
Machine reeling establishments are practically identical with filatures, 
and sedentary reeling establishments mean so many farmers’ families. Dou- 
pion reeling is mainly carried on as a home industry, except in certain localities. 
226 Je