290 Jaiiffret's and Qiiaiard's Manures, 



have been raised, which have the general aspect of the laburnum : 

 but in my brother's garden one of them has grown to the height 

 of 4 ft. 6 in., while another beside it remains only 2^ in. high; 

 and, amongst those I raised, two showed a purple stain on the 

 young wood and petioles. The seed produced on your small- 

 leaved branch did not vegetate, but I have a seedling two years 

 old from such a branch on my brother's tree, which has entirely 

 the aspect of C. purpureus, though differing a little in the shape 

 of the lobes of the leaves. The branches of the small-leaved 

 variation upon his were last year loaded as with a sheet of small 

 purple flowers, but a branch destined to bear yellow flowers hav- 

 ing made its appearance, upon its first producing blossom this 

 season, not a flower appears upon the small-leaved portion. 

 Another strange circumstance has occurred, as he informs me 

 that a strong rigid branch last year shot from the tree perpendi- 

 cularly downwards, of which we must await the further deve- 

 lopement. 



London, May 7- 1840. 



Art. III. On Jauffret's Manure, Quenard's Manure, Clarke's desic- 

 cated Compost, Lances Composts, S^c. By the Hon. and Rev. W. 

 Herbert, D.C.L. F.H. S., &c. 



I OBSERVE at p. 227. of the 22d volume of the Annals of the 

 Royal Horticultural Society of Paris, which you have had the 

 kindness to lend me, an article relating to two modes adopted by 

 M. Quenard, of preparing manure in a mode and upon a prin- 

 ciple said to be analogous to that which had been discovered by 

 M. Jauffret. Having read a pompous account of Jauffi*et's 

 Manure, which was said to be speedily composed from articles 

 common, cheap, and at present useless, and to be of extraordi- 

 nary efficacy, I applied two years ago to a friend at Paris to try 

 to obtain some particulars concerning it, that I might bring its 

 virtues to the proof; but I received for answer that a train of 

 experiments to ascertain its value were in progress, and that the 

 particulars of the compost could not- be communicated to me. 



I have very little faith in any such discoveries. Some years 

 ago an ingredient was advertised in London under the name of 

 Clarke's desiccated Compost, said to be a concentration of the 

 powers of London manure, with references to many persons 

 who could testify to its efficacy. Amongst those was Lord Gren- 

 ville, to whom I applied ; and he informed me that he had tried 

 it extensively with very great advantage. Encouraged by the 

 testimony of a person of such accurate habits, I purchased casks 

 of it to the value of 40/., besides its freight and carriage to my 

 abode in Yorkshire. Being desirous of ascertaining its powers 



