400 CORRESPONDENCE. [1853, 



I am afraid to touch Gregg's Mexican plants, for 

 fear of the time they would consume. In " Exploring 

 Expedition," I branch out little or none, except a few 

 notes in Malvaceae, and probably more in Composite. 



If I could do the work abroad, I could work up 

 collateral things most advantageously ; but the means 

 here at disposal are too poor. 



Still, you will be pleased with my volume i. when I 

 finish and send it to you (the letterpress this fall !). 



No specimens scarcely of Cactacese in collection 

 Exploring Expedition, a drawing or two. I shall 

 send them on to you presently. . . . 



I grieve to tell you that Adrien de Jussieu is dead. 

 Cancer in the stomach, his tedious malady proves to 

 have been. It makes a deep impression on the sci- 

 entific men, and the public, too, in Paris. He was 

 much my most intimate correspondent in France, a 

 true friend, and a charming man. 



You know, perhaps, that Moquin-Tandon has suc- 

 ceeded the late Achille Richard at L'Ecole de Me*de- 

 cine. Tulasne, I suppose, will be the new professor 

 at the Jardin des Plantes ; at least he ought to be, 

 as he is the most able man. 



No farther news since my last. 



Agassiz looks poorly and says he is not well. . . . 



I never could get Fouquiera up. To-day I have 

 sown some seeds, and put on my own table, by the 

 window, to watch. . . . 



18th AugTist. 



Agassiz handed me your note about the Compass 

 plant. I took him at once into the Garden, to see Sil- 

 phium laciniatum, terebinthinaceum, and pinnatifidum. 



He agreed there was no direction to be made out, 



