115 
REPORT ON AN EXPEDITION TO JAMAICA, CUBA, AND THE 
Fioripa Keys. 
Dr. N. L. Brirton, DirEcTor-IN-CHIEF. 
Dear Sir: By way of ee eies to your report on our 
recent Route to Jamaica, Cuba, and the Florida Keys, I beg 
to submit the following brief outline of the work accomplished 
during ee period in connection with the collection and study of 
the marine algae. 
On the morning of February 25, I was landed at Port Antonio, 
Jamaica, from the steamer “Clyde” of the Royal Mail Steam 
Packet Company, while you and Mrs. Britton proceeded to King- 
ston, During avisitto Jamaicain December, 1906, and January, 
1907, I had enjoyed the privilege of collecting the algae of the 
about Montego Bay on the northwestern coast. A plan to visit 
Port Antonio at that time was frustrated by the disastrous earth- 
quake of January 14, 1907. The algae of Jamaica and of Port 
Antonio in particular have become fairly well known through the 
collections made by the lamented Dr. James Ellis Humphrey, 
associate professor of botany in Johns Hopkins University, who 
lies buried in the Port Antonio cemetery, and through the collec- 
tions of Mrs. Cora E. Pease and Miss Eloise Butler. The sp 
mens obtained by these collectors formed the chief basis of i 
list of Jamaican marine algae published by Mr. F. S. Collins 
in 1901. With the hope of adding to the Garden’s herbarium 
most of the species found here by the collectors named, as well, 
possibly, as others that escaped their attention, I found the oppor- 
tunity of spending a few days at Port Antonio most welcome. 
remained there about six days, during which time I was enabled 
to examine the marine flora of the harbor and of points on the 
adjacent coast as far east as the ‘“‘ Blue Hole” and as far west 
as St. Margaret's Bay. The reefs to the north of Navy Island, 
which forms the main barrier of the inner harbor of Port Antonio, 
were perhaps of the greatest interest. In some of the more pro- 
tected places on the landward side of these reefs were growing 
three species of Azvrainvillea and five of Halimeda (Tuna, tridens, 
