October 11, 1895.] 



SCIENCE. 



477 



characters discovered which he claims jus- 

 tify the recognition of Stemiiulus as an Or- 

 dinal Type. 



Characters which are Useful in Describing Lar- 

 vce of Sphingidce. By Geo. Dimmock. 

 In this paper the author emphasizes the 

 importance of measuring and describing the 

 head, noting the granulations and rugosi- 

 ties of the surface of the Larvse, and the 

 structure and coloration of the stigmata. 

 The Affinities of the Pythonomorph Reptiles. 

 By E. D. Cope. 



This paper was discussed in Prof. Cope's 

 usually lucid style, and was illustrated by 

 blackboard sketches. 



Temperature Variations of Cattle Observed 

 During Extended Periods of Time, imth Ref- 

 erence to the T^tberculosis Test. By Julius 

 ISTelson. 



In this paper the author discussed an ex- 

 tended series of experiments made upon a 

 herd of twentj'-eight cattle upon the farm 

 of the New Jersey Agricultural Experiment 

 Station. A graphic representation of the 

 experiments was made by means of care- 

 fully executed charts. Very important re- 

 sults were indicated which give promise of 

 great value. 



On the Girdling of Elm Twigs by the Larvce of 

 Orgyia leucostigma, and its results. Bj'' J. A. 



LiNTNER. 



ISIotes upon the Eupaguridce. By Chas W. 



Haegitt. 



This paper reviews characteristic morpho- 

 logical and phj^siological traits of the fam- 

 ily and discusses their bearing ou the sub- 

 ject of heredity. 

 On a Revision of the North American 



Craspedosomatidce. By O. P. Cook. 

 A New Character in the Colobognatha, luith 



Drawings of Siphonotus. By O. F. Cook. 

 A New Wheel for Color Mixing in Tests for 



Color Vision. By J. H. Pillsbuey. 

 Some Further Residts of Investigation of Areas 



of Color Vision in the Human Retina. By 



J. H. Pillsbuey. 



A Study of Panorpia and Bittacxis. By E. P. 



Felt. 



The following resolutions relative to the 

 proposed International Bibliographical Bu- 

 reau were adopted : 



Wheeeas, The date of publication is a 

 question of fact to be determined by investi- 

 gation and not by arbitrarj'' ruling, and 



Wheeeas, In the world at large the date 

 of publications of books is the date at which 

 they are printed, aud 



Wheeeas, The adoption of any other 

 date would have no practical effect for this 

 reason, and for the following reasons, viz.: 



First, The majority of publications are 

 not distributed but sold ; 



Second, The distribution when it occurs 

 may be rendered ineffective by accidents 

 such as tires, loss by mail, etc.; 



Third, Distribution by individuals may 

 be delayed or prevented by absence from 

 home, sickness or death; 



Fourth, Distribution bj^ governments is 

 often delayed for routine reasons; 



Fifth, The actual date of mailing will 

 often be impossible to ascertain with cer- 

 tainty owiug to lack of record or irregularity 

 in the period of transmission, and 



Whereas, The determination of the date 

 of printing will be generally found in the 

 records of the printing office and can be 

 established by the testimonj^ of several dis- 

 interested persons, while the time of mailing- 

 will be known generallj' by but one person, 

 therefore 



Be it Resolved : First, that the Zoological 

 Section of the American Association for the 

 Advancement of Science recommends that 

 the date of the completion of printing of a 

 single issue be regarded as the date of pub- 

 lication ; and 



Second, that the Section recommends 

 that such date be printed on the last signa- 

 nature of all publications, whether books, 

 periodicals or separates. 



Resolved further : 1 , That the Section of 



