The N.Z. Journal of Science and Technology, Vol. I, No. 5, Plate II. 
Specimens of Coprosma Dyes. 
I 
No. 1.— Coprosma grandifolia bark on 
wool mordanted with 3 per 
cent, potassium bichromate: 
2 bark to 1 wool. 
- '' 1 • 
Y. .. 
No. 2.— Coprosma grandifolia bark on 
wool mordanted with stan¬ 
nous chloride and potassium 
bichromate: 4 bark to 
1 wool. 
No. 3.— Coprosma areolata bark (after 
sulphuric-acid treatment) on 
wool mordanted with 3 per 
cent, potassium bichromate: 
6 bark to 1 wool. 
No. 4.— Copros?na foetidissima bark on 
wool mordanted with stan¬ 
nous chloride and potassium 
bitartrate (single bath): 
1 bark to 1 wool. 
No. 5.— Coprosma areoloia bark on wool 
mordanted with stannous 
chloride and potassium 
bitartrate (single bath): 
4 bark to 1 wool. 
No. 6.— Coprosma lucida bark on wool 
mordanted with 3 per 
cent, potassium bichromate: 
1 bark to 1 wool. 
* 
No. 7.— Coprosma areolata bark on wool 
mordanted with 3 per cent, 
potassium bichromate. 
imu 
[Fare p. 257. 
