(10) 472 



Tropical American genera, to Dr. Carl MLiller, at Halle. He 

 treated them in the same way that Schimper did Mandon's, giving 

 most of them manuscript names, making few or no critical com- 

 parisons, and furnishing no descriptions. As far as we know, 

 they are still lying in his herbarium unpublished.* 



When we went to Europe, in 1891, I again took with me all 

 the doubtful species and those supposed to be new, for the sake of 

 making further comparisons at Kew with Schimper's specimens. 

 In several cases, as shown in the text, I found that Dr. Mliller was 

 mistaken, and that my original determinations were correct; in 

 several others I found manuscript names of Schimper's given to 

 Mandon's specimens which had priority over those of MuUer's 

 given to Dr. Rusby's specimens. In several other cases the types 

 were not at Kew, and the specimens had to be referred to William 

 Mitten and Emile Bescherelle for further study. We visited Mr. 

 Mitten and I showed him and gave him several species, the 

 types of which were in his herbarium. He very kindly made the 

 comparisons for me, and in several cases shared his specimens 

 with me. 



We also took a set of the duplicates for M. Bescherelle, and I 

 spent a day with him at the Jardin des Plantes in Paris looking up 

 some of Montagne's types. In a letter received from him at Kew 

 he says : 



"As for the mosses collected in Bolivia by Mandon, I think I 

 remember that they were distributed by me in 1869, after the 

 death of Mandon, which occurred on the 30th of December, 1866. 

 Schimper named them, but did not describe or diagnose them. 

 All of Mandon's mosses, Bolivian and Madeira, were sent to me 

 by M. Cosson to be made up into sets, which were sold for the 

 benefit of the widow. I kept one set and the residue, and pro- 

 posed publishing at least the list of new species with the numbers 

 and localities, in order to save Schimper's priority in the new dis- 

 coveries. Unfortunately, other occupations have prevented my 

 accomplishing this project. It will give me pleasure to share with 

 3'ou my duplicates." 



We have to thank M. Bescherelle for a very good set of Man- 

 don's mosses and we were also fortunate enough to secure Dr. 

 Spruce's own private set of his Musci Amazonici et Andini, so 



* Since this manuscript was sent to the printer we have learned that Dr. Miiller is 

 proposing to publish a Brylogia Boliviana in the Nuovo Giornale Botanico Italiano. 



