80 PROCEEDINGS OF THE AMERICAN ACADEMY. 



botanical collecting upon the Galapagos Islands, it will be seen that 

 plants have been secured under no less than 2300 numbers and that 

 about two-thirds of these have been examined during the preparation of 

 this paper. With the exception of two cacti in the Engelmann Herbarium 

 I have been unable to locate the phanerogams said to have been collected 

 by Dr. Thomas Hill on the Hassler Expedition, and I should be greatly- 

 obliged for any information regarding their disposition. 



Although great pains have been taken to summarize in this paper 

 every bit of available information regarding the flora of these islands, 

 which have now been visited by more than a score of collectors, it must 

 be admitted that our knowledge of the subject is still very incomplete. 

 With all due appreciation of the valuable and self-sacrificing services 

 which zoologists and geologists have rendered in collecting plants in the 

 Galapagos, it should be remembered, when interpreting the general 

 results, that during the last half century the islands have been visited by 

 only one trained botanical systematist and by him very hurriedly. It 

 cannot be doubted that much remains to be done in exploring and 

 recording the Galapageian flora, and it is to be earnestly hoped that 

 future collectors will endeavor to secure specimens of each plant from every 

 island, since these insular races are in many cases so similar that mere 

 lists, based upon hurried field determinations, are almost valueless. 



BIBLIOGRAPHY OF THE BOTANY OF THE GALAPAGOS ISLANDS. 



By M. A. Dat. 



Agassiz, Alexander. (1) General sketch of the expedition of the " Al- 

 batross " from February to May, 1891. Bull. Mus. Comp. Zool. 

 xxiii. 1892, pp. 1-89, t. 1-21. 



(2) Cactaceae in the Galapagos Islands. Nature, liii. 1895, p. 199. 



Andersson, Nils Johan. (1) Om Galapagos-oarnes Vegetation. Stock. 

 Akad. Handl. 1S53, pp. 61-256. (Issued 1854.) 



(2) Om Galapagos-oarnes Vegetation. 1857, pp. 114, t. 1-16. (Al- 

 though this paper is dated 1857, a paper published in 1859 is cited by 

 it on p. 89.) 



(3) Ueber die Vegetation der Galapagos-inseln. Linnaea, xxxi. 1S61, 



pp. 571-631. 



O 



Angstrom, Johan. (1) Fortecking och beskrifning ofver Mossor, samlade 

 af Professor N. J. Andersson under Fregatten Eugenies verldsomseg- 

 ling aren 1851-53. Stockholm, Akad. Ofversigt, xxix. 3-29 (1S72), & 

 xxx. 113-151 (1873). 



Anonymous. The " Hassler" Expedition. Nature, vi. 1872, pp. 352-354. 



