TABLE 1.

Comparison of larval densities in moderate and high water pollution

Days Post treatment	Moderate		High		Chi sqr	P value
	Died	Survived	Died	Survived
7	282	18	267	33	4.82	p < 0.05
14	258	42	246	54	1.79	p > 0.05
21	237	63	219	81	2.96	p > 0.05
28	225	75	168	132	23.96	p < 0.001
35	174	126	138	162	8.65	p < 0.01
42	135	165	84	216	18.70	p < 0.001