IOWA ACADEMY OF SCIENCES. 199 



Rocky woods; May; fruit ripe in September; infrequent; 

 Johnson and Jefferson counties. The type was collected along 

 Rock creek, in the southeastern part of Jefferson county. The 

 specimens from Johnson county have heretofore b reeneferred 

 to V. dentatum L. It is possible that many Iowa specimens 

 labeled V. dentatum L. belong here. Britton and Brown in 

 their Illustrated Flora, Vol. 3, p. 230 in commenting on a form 

 of V. ■pubescens (Ait.) Pursh. say, "A form of this species, or a 

 related plant, with petioles one-half inch long or more, occurs 

 in Missouri. " They, doubtless, refer to the above named vari- 

 ety. Further study may warrant the raising of the variety to 

 specific rank. 



V. dentatum L. This species often reaches a height of twelve 

 to fifteen feet. The leaves are glabrous on both sides or pube- 

 scent in the axils of the veins beneath. Drupe globose -ovoid, 

 stone grooved on one side, rounded on the other. This species 

 has been reported from Dubuque, Delaware, Jackson, John- 

 son, Dallas, and Winnebago counties. We have not been able 

 to examine the material since our attention has been especially 

 given to the genus except as to the Johnson county material 

 which so far as we have seen belongs to the preceding. Hence 

 its reference to V. dentatum L. , Proc. Iowa Acad, of Sciences, 

 Vol. 6, p. 186, is an error. 



Flora of Iowa, p. 69; Iowa Geol. Sur., Vol. 8, p. 197; Mac- 

 bride Forestry notes of Dubuque county, p. 20, Iowa Geol. 

 Sur., Vol. 10; Iowa Geol. Sur., Vol. 7, p. 106. 



KLEBS— LEOFFLER BACILLUS. 



BY GERSHOM H. HILL, M. D., INDEPENDENCE, IOWA. 



This is a scientific age. The use of scientific} methods in the 

 vocation by which a man gains a livelihood makes it both 

 interesting and profitable. The scientific man realizes the 

 necessity of telling the truth, the whole truth and nothing but 

 the truth. Scientific work makes a man careful, accurate and 

 a close observer. The scientific American is somewhat differ- 

 ent from the scientific German. The former places a high cash 

 value on his time; he is intensely utilitarian. The geologist is 

 expected to furnish the cities with clay and coal to make brick 



