Laveran, Charles Louis Alphonse

Autograph letter signed, two pages - both sides, 4,5 x 3,5 inch, Paris, 11.04. (no year), in French, to a colleague, with scientific content - concerning malaria, written and signed in black ink "A. Laveran", in very fine condtion.

"Mon cher confrere
Je crois avoir vu dans votre bibliographie du paludisme l`indication d`un travail sur l`emploi des sangsues pour la conservation des hemato(...), je croyais avoire cette indication, mais je ne la retrouve pas;
je vous serais tres reconnaissant si vous vouliez bien me `l`envoyez quant vous en aurez le temps.
votre tout devoue - A. Laveran
Paris 11 avril"

Translated:
"My dear colleague
I think I saw in your bibliography of malaria a reference to a work on the use of leeches for the preservation of blood [hemato = blood]. I thought I had that reference, but I can not find it;
I would be very grateful to you if you would send it to me when you have time.
Your truly devoted
A. Laveran
Paris 11 april"