OCTOBEK 18, 1912] 



SCIENCE 



509 



Attention will be called to the drag dips and 

 other evidences by which the line of the fault 

 can be traced. The topographic effect of the 

 fault can be seen very satisfactorily from the 

 south peak ■ of Lamentation, which will be 

 ascended. The party will visit the site of the 

 once picturesque Westfield Fall, and its little 

 post-Glacial gorge. In a railroad cut near 

 Westfield three small faults marked by drag 

 dips can be observed. In the same vicinity 

 can be seen evidence that the posterior trap 

 sheet, at least in that vicinity, is a double 

 sheet. Lunch will be taken at the club house 

 at Highland. Price, seventy-five cents. Party 

 will arrive at Meriden at 5 :13 p.m. 



The route is on the Middletown and Meri- 

 den sheets of the Topographic Map of Con- 

 necticut. Reference may be made to Davis's 

 paper on the " Triassic Formation of Con- 

 necticut," in the 18th Annual Report of the 

 U. S. Geological Survey, and to Rice and 

 Gregory's " Manual of the Geology of Con- 

 necticut," Bulletin 6 of the Connecticut Geo- 

 logical and Natural History Survey. 



Meriden is on thfe N. T., IST. H. and H. R. R., 

 between Hartford and New Haven. Middle- 

 town can be reached from Hartford or New 

 Haven via Berlin, from Hartford by the 

 Valley Branch or by trolley, from New Haven 

 by the Air Line, from Meriden by trolley. 



Every one is earnestly requested to inform 

 Professor Rice as early as practicable, whether 

 he will be present at the lunch in Fisk Hall 

 Friday evening, and whether he wishes to 

 engage lodging at the Winthrop Hotel, as well 

 as whether he will be in the party on Satur- 

 day. Herdman F. Cleland, 

 Secretary 



WiLLIAMSTOWN, MASS., 



October 5, 1912 



THE STUDY OF MALABIA 

 The first expedition from the Tulane Uni- 

 versity School of Tropical Medicine to the 

 tropics for the study of malaria was made 

 possible through the kindness of an unknown 

 friend of the school who, through Dr. Isadore 

 Dyer, dean of thfe medical department of 

 Tulane University, contributed a fund to 

 finance the project. 



The United Fruit Company, who have al- 

 ready contributed $25,000 towards the ex- 

 penses of the School of Tropical Medicine, 

 placed their steamships and other equipment 

 at the service of the school for the transpor- 

 tation gratis of the expedition and apparatus. 

 Colonel W. C. Gorgas, chief sanitary officer 

 of the Panama Canal Zone, with various 

 members of his staff, placed all the material 

 in his hospitals at the disposal of the expedi- 

 tion and extended every possible courtesy. 



The personnel of the expedition consisted 

 of two members of the school. Dr. Charles 

 Cassedy Bass, assistant professor of tropical 

 medicine and hygiene, and Dr. Foster Mathew 

 Johns, assistant in the laboratories of tropical 

 medicine and hygiene. 



The object of the investigation was the 

 cultivation of the malarial parasites in vitro 

 which had already been accomplished by Pro- 

 fessor Bass, but many details of which re- 

 mained to be elucidated and confirmed. 



In this the party obtained complete success. 

 It was found that the malarial Plasmodia can 

 be grown in human serum, in Locke's fluid 

 (from which calcium chloride is omitted) and 

 in human ascitic fluid. In the majority of 

 the cases dextrose must be added to the 

 medium to secure satisfactory growth. The 

 most favorable temperature for the cultiva- 

 tion of Plasmodia is about 40° C. 



Positive cultures were obtained from 29 

 cases of sestivo-autumnal malaria, 6 cases of 

 tertian and 1 case of quartan. Cultures were 

 carried on for four generations from the 

 parent culture before the expedition left Cen- 

 tral America, and can probably be maintained 

 indefinitely. 



The full report of the expedition may be 

 found in the October number of the Journal 

 of Experimental Medicine. 



In addition to these researches the school 

 has also carried out experimental work on 

 pellagra, leprosy, beri-beri, blackwater fever, 

 filariasis and other tropical diseases, which 

 work will be found in the forthcoming first 

 report of the school. 



The school is under the direction of Dr. 

 Creighton Wellman, formerly of West Africa 

 and the London School of Tropical Medicine. 



