332 A DECADE OF WORK AT HOME. [1845, 



trated, ending with diatoms, transitions to corallines 

 through sponge, etc., and the locomotive spores of 

 Confervae, Zobsporeae. 



Lecture 10. Whole subject of spontaneous move- 

 ments and sensibility in flowering plants, the life of 

 plants, etc. (treated in a somewhat original way), and 

 the real differences between plants and animals. 



Lecture 11. The principles of classification. Indi- 

 viduals, species, their permanence, genera, orders, etc. 



Lecture 12. Historical development. The Linnaean 

 system, the natural. This ends so as to give me a 

 fine place to begin at next year. . . . 



I shall soon be able to spare Sprague to draw the 

 Illicium, if it still holds on. But I cannot spare him 

 just yet. He has still to copy the red-snow bank 

 from Ross, eighteen feet long ! finish two pieces of 

 algae, etc., etc. 



TO A. DE CANDOLLE. 



April 5, 1845. 



I anxiously wait for the notices of the life and 

 writings of your lamented father, which you so kindly 

 offer. I agree with you that that of Daubeny 1 gives 

 the best view of the philosophy of his science ; and 

 yet there are points of view that he has not touched 

 upon. You, of course, know better than any one else 

 what were your father's philosophical views in 

 natural history, his modes of thinking and working ; 

 and if, when you send me the above-mentioned docu- 

 ments, you would also feel at liberty to place such 

 confidence in me as to give me your own views and 

 suggestions upon the subject, and especially upon the 



1 Dr. Charles Daubeny, G. B., 1795-1867 ; professor of botany and 

 rural economy at Oxford ; chemist and geologist. 



