My dear Sir

I had hoped to have had no occasion to have troubled you again by letter, but the enclosed¹ throws me quite back.— Will you be so kind as to read it over, & tell me what I must answer. I have not the least idea, whether glass coated with colour or coloured throughout makes any difference. Will you be so kind as to let me have one line in answer, & return the enclosed.—

I asked whether they had (& the price of)

• 1. “intense cobalt Blue”
• 2. “silver yellow”
• 3. “deep copper red”

& used your name & stated that my object was to experimentise on plants.—

Pray forgive this trouble | Yours truly obliged | Charles Darwin