This paper analyzes the evolution process of Lawrence s views on marriage and the man-woman relationship reflected in his works,sums up its process of cocooning and decocooning,and points out that it is the times he lives in and his personal experience that have brought on this kind of evo- lution.

It is right to check on parasitism natural enemy in Cnidocampa flavescens cocoon by soft X ray.

Generation analysis and variance and covariance analyses in quantitative genetics were employed to estimate 6 genetic parameters and broadand narrowsense heritability of the character perforated cocoon and its correlation with cocoon crop per 10000 fourthinstar silkworms.