758 



SCIENCE. 



[N. S. Vol. XVII. No. 436. 



case and ground floor by the Frencli Oxyhy- 

 drogen Company, and the entrance hall of 

 the first floor by ISTernst lamps. Conferences 

 were held in the Physics Theatre of the Fac- 

 ulty of Sciences on April 16, 17 and 18, at 

 which the following papers were read : — •' On 

 Anomalous Propagation of the Form of Vibra- 

 tions in the Neighborhood of a Focus,' by M. 

 G. Sagnac ; ' Recent Eesearches in Radio- 

 activity,' by M. P. Curie ; ' Experiments on 

 Electric Convection,' by MM. Cremieu and 

 Pender ; and ' Further Experiments on Electric 

 Convection,' by M. Vasileseo Karpen. 



Eeutee's Agency states that Sir Alfred 

 Jones, chairman of the Liverpool School of 

 Tropical Medicine, has received the following 

 communication from the expedition sent by 

 the school to the Gambia and Senegambia to 

 investigate the newly-discovered parasite of 

 trypanasoma. The report is dated March 18, 

 and comes from McCarthy Island, 150 miles 

 in the interior of the Gambia. The communi- 

 cation says : " We have just returned from a 

 trip, taking nearly two weeks, to Maka, the 

 chief town of the French ' Cercle de Niani- 

 Ouli.' While there we stayed with M. Perthes, 

 the French Commandant of that district, who 

 was very kind to us in every way. Maka is 

 situated about sixteen miles from the head of 

 Kunchau creek, and about twice that distance 

 from the main river. Our object in going 

 there was to examine the natives living in the 

 interior and away from large collections of 

 water. Although we found the parasite in 

 none of the natives examined, we did find a 

 trypanasome in each of two horses belonging 

 to the Commandant, which he believes to have 

 become infected while in the district far up 

 the river beyond the British possessions. We 

 are hoping that there is something in this, and 

 intend to experiment at St. Louis (French 

 territory), as many horses there are said to 

 suffer from a species of ' malaria,' and die 

 from it. We hope to be able to show that it 

 is trypanasoma, the symptoms, as far as we 

 can see at present, being the same as those 

 developed in the two horses seen at Maka. 

 This will be of great importance to the French 

 government in Senegal if correct. If it is at 



all possible, Dr. Todd intends leaving for this 

 district within the next two days. At present 

 we intend to leave the Gambia by the Benin, 

 which is due at Bathurst on the 7th of next 

 month. From Dakar we shall go straight to 

 St. Louis, where, unless something important 

 turns up, we shall only stay for a fortnight 

 before returning to Dakar to catch the steamer 

 for Conakry. We recently infected a horse 

 with the human trypanasome. Only two days 

 ago we found numerous trypanasomes in its 

 blood, and in the stomach of a species of horn 

 fly (which is rather troublesome here) which had 

 fed on this horse we found interesting forms 

 of the parasites suggesting conjugation." 



At the recent meeting of the Michigan 

 Academy of Science, at Ann Arbor, the two 

 following resolutions were adopted: 



(1) Whereas, The contour topographic map 

 of the Ann Arbor quadrangle, recently com- 

 pleted by the United States Geographical Sur- 

 vey in cooperation with the Geological Survey 

 of Michigan, is of a high degree of excellence ; 

 and 



Wheeeas, a similar map of the entire area 

 of Michigan, in addition to its direct com- 

 mercial and educational importance, would be 

 of great assistance in many branches of scien- 

 tific research: 



Resolved, That the request now before the 

 legislature for an addition of $1,000 to the 

 appropriation fop the State Geological Survey, 

 to enable it to continue to cooperate with the 

 United States Geological Survey in making 

 a topographical survey and contour topo- 

 graphic map of Michigan, is heartily approved, 

 and the prompt passage of the measure re- 

 ferred to earnestly desired. 



(2) Whereas, The sanitary science section 

 of this academy has considered the subject of 

 the proposed establishment of state sanatoria 

 for consumptives, and it has been learned by 

 scientific methods that such sanatoria, in 

 other states and countries are efficient for the 

 education and care of consumptives ; therefore. 



Resolved, That this academy respectfully 

 petition the legislature of Michigan to estab- 

 lish at least one state sanatorium for the edu- 

 cation and care of consiunptives, and that an 



