76 BOTANICAL GAZETTE [yuLY 
of Padre island between Corpus Christi and Brownsville. A member of 
the staff will accompany a party conducting the mineralogical survey, which 
will make an expedition into the trans-Pecos region of the state. A party of 
students will collect plants and study ecological questions from Cuero west- 
ward toward the Pecos river. These various expeditions should do much in 
making known the state botanically. 
THE BOTANICAL staff in the State University of Iowa has organized a 
summer school of botany to be conducted along the shores of Lake Okoboji 
in northern Iowa. The region is not only one of the most delightful of western 
summer resorts, but has unusual attractiveness for the naturalist. The uni- 
versity offers this year to students of botany a laboratory with all essential 
apparatus and libraries. Abundant boats put all the lakes into easy com- 
munication with one aaother, and in addition the laboratory will have its own 
equipment for the use of students. Professor Shimek will act as director and 
will be aided by special assistants. It is expected that hereafter the work in 
botany for the summer session of the State University of Iowa will all be con- 
ducted at Okoboji. 
Dr. J. N. ROSE left about the 2oth of June for his third botanical trip to 
Mexico. He expects to go first to the City of Mexico, working out from this 
point as a base southward towards Acapulco and eastward toward Vera Cruz, 
probably ascending Mount Orizaba and Popocatepetl. The objects of his 
trips are to make a general botanical collection; to collect at type localities 
certain species of Humboldt, Galeotti, Schiede, and other early collectors ; 
and to acquire information regarding the economic uses of Mexican plants, 
especially such as will supplement a second paper on the useful plants of 
Mexico, which is now nearly completed. 
ERRATA in the last volume reported too late for inclusion in the usual list 
are as follows: 
P. 109, line 4, after pellucido-punctata insert comma. 
P. 121, line 8 from below, after corticata insert comma. 
P. 392, line 14, for ERIGERON read ERIOGONUM. 
P. 393, line 6, for TROGANUs read T1oGanus. 
P. 439, line 24, for position and negation read positive and negative. 
pep mms eaa EP tt 
