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Geology. 293 
under new names several species which have been described by other 
the Report and circulated with no other information as to the date than 
what is given on the title page, paleontologists in other countries may 
possibly be led to quote its contents with a date as far back as 1858,* 
From what appears upon the cover of the Report itself most people 
printer). We have evidence that important changes were introduced 
into the text of the Geological part as late nearly as the above date, if 
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ists should be guarded against, and nothing can be more likely to make 
&man of science feel that he has been unfairly dealt with than to see 
1, ‘IpiuM.—This genus if adopted will include several species heretofore 
referred to Orthis ; the dorsal valve fiat and the ventral valve of a pyramidal shape. 
+ AMBOCELIA—The types of this group are said to be Orthis umbonata, — 
7 it is therefore the same as cm 
* In confirmation of this suggestion we have received (January 19,) a bro- 
i t 
By Ji titled: “ Contributions to Paleon j, 1858 and 1859 
_ 4y James Hall, Geologist and Paleontologist, ete. (From the 
S of the Regents on the State Cabinet, . 55-128, 8vo.” On the cover there 
u te same title but the date there reads, 2 de and 1859 with additions in 1860.” 
MS is still too indefinite, ee ae 
No principle ly established in the ethies of science than that 
° is more thorough 
Be: one of publication and not the tats of composition or printing, settles the ques- 
ne of priority of authorship, Hence has arisen actice of Authors of distribu- 
4 ing separate copies of Memoirs in advance of publication of an official report—thus 
can 1.2 the earliest practicable date of publication. To this course no objection 
can be made, but no changes from the original text are admissible. 
AM. Jour. Sct.—Szconp Szrtes, Vou. XXXI, No. 92.—Mancu, 1861. 
ae 38 ri e : 
