Regrets he cannot accept invitation. "My health will not at present stand going out in the evenings."
12 Upper Gower S
My dear M
I am very much obliged to you for your several cards which you have so kindly sent us, & which I should have had greater pleasure in accepting than any other parties, had not I found by dear-bought experience that my health will not at present stand going out in the evening.
I am going to take a liberty, which I trust you will excuse; it is to ask permission
for my sister who is staying with us to accompany my brother, whom I understand you have
also kindly asked, to your party tomorrow evening:
Believe me | My dear Sir | Yours very truly obliged | C. Darwin