X i;i(»(;uAriii(;Ai> si'CiiTcii op 



lilic nu'ii i»l lilt' \;ii-it»iis (k'i»ai-LiiiL'iil.s in W'ashiii^tnii i^^-cally to 

 his pleasure and ^idvaiita^e. 



Ill ISMi lie was eiiii>l(»ve«l l»v Hie Louisville ami Nashville 

 Kailroad lo make a lull colleelious of the agricultural, I'oreslry 

 ami minerai resources ueeurriu"; alon^ the line of thai road. 

 '1 hese eolleelions, toj^ether with manv a<lditioiis suhseciuently 

 imule, were jilaeed on exhibition at the World's Exposition in 

 New Orleans in 1SS4, where J)r. Molir also had charge (»!' the 

 exhibit of the agricultural and oilier natural resources of the 

 IState of Alabama. This exhibit was also displayed at the 

 Louisville Expositi<»n, and a descriittive catalogue of it was 

 published under the title ""The \ahiral JiC^^jtirccs of Alu- 

 uuiiiu," concerning which I'rof. Lamson-Scribner, in a lecture 

 on Southern Botanists, S'dya, "this is one of the few pajR'rs of 

 its kind which possesses real scientific merit, and in no way 

 can mislead the reader or prospective settler." In the follow- 

 ing year (1884) he prepared a report on the soils, climate and 

 agricultural resources of the territory traversed by the L. &, 

 N. railroad lines. 



The long continued work in the Exposition building in New 

 Orleans during exceptionally unfavorable weather ct)nditions, 

 brought on a return of his rheumatic troubles, which greatly 

 interfered with his subsequent work in the Held. 



In 181)2 he turned over the management (^f his drug business 

 to his son and devoted his entire time to the preparation of the 

 '^ riant Life of Alabama'' and to the investigation of the Flora 

 of Nortli Amei'ica for the Division of Forestry of the U. IS. De- 

 partment of Agriculture. 



In the prosecution of these works he spent much time in ar- 

 ranging the herbarium of Alabama jjlants at the University of 

 Alabama, mounting the specimens in the most beautiful style, 

 and classifying them according to the system of Engler and 

 I'rantl. As a supplement to the collection of the native woods 

 of Alabama above mentioned, he also prepared a set of about 

 one hundr(Ml and fifty individual glass-front cases in which 

 were displayed the specimens illustrating the foliage, flowers 

 and fruit of the forest trees. In recognition of the importance 

 of the work of Dr. Mohr in these collections illustrating 

 the hotany of the IState, the herbarium has received the title of 

 the '\\fo]ir Hcrhariani." 



During these years also, in connection with the Forestry 

 Division, were prepared his great work on the Pines, publish- 

 ed in 181)(), and his monograiihs on the Cypress, the Juniper, 

 and the Ked Cedar, which are now in press. Monographs on 

 the hard wood trees were to follow next, the first of the series 

 being that on the Oaks, which he had just completed when he 

 died. 



