372 CARNEGIE INSTITUTION OF WASHINGTON. 



larger breeds of the domestic horse. From Texas has been received, 

 for examination and description, a nearly complete skull and many- 

 parts of the skeleton of a small horse. The study of these materials led 

 to the study of the measurements and indices which are relied on to 

 establish the composite origin of the domestic horses. From Elephant 

 Point, Alaska, there was sent to the United States National Museum, 

 many years ago, a part of the skull of an undescribed species of musk-ox. 

 Detailed descriptions of these new species and discussions of their 

 relationships are ready for publication. 



A paper on the Pleistocene epoch of Iowa and its mammals will soon 

 be published as a part of volume 22 of the Iowa Geological Survey. 

 Although a mass of data has been accumulated and a number of maps 

 have been prepared or are in course of preparation, much remains to be 

 done before a final report can be made on the subject under investigation. 



Wieland, G. R., Yale University, New Haven, Conn. Continuation of investi- 

 gations on fossil cycads. (For previous reports see Year Books Nos. 2-4, 

 6-9, 11, and 12.) 



The activities of the present year have been confined solely to work 

 on the fossil cycads and to bringing together usable laboratory equip- 

 ment. That now at hand, as supplemented by Yale University facili- 

 ties, may fairly be called superior. In fact, there are few immediate 

 needs unprovided for or that can not be readily met from present funds. 



The private laboratory unit at Anawan, West Haven, Connecticut, 

 mentioned in last year's report, is provided with water, gas, and elec- 

 tricity, and is especially suited to and well equipped for scientific 

 photography and the sawing of thin sections — blocking-out work. As 

 yet no attempt has been made to improve apparatus for grinding and 

 polishing, although plans for bettered equipment have been considered, 

 and can be effectively carried out at any time when desirable. It is 

 wished to avoid the duplication of any installations more appropriately 

 falling within the province of existing large institutions. 



Meanwhile field study and collection of Mesozoic cycads, more than 

 ever desirable to carry out, have lapsed for various other reasons than 

 nearly universal war. However, now that it has been possible to 

 provide for carrying forward quite every phase in the elaboration of 

 material with relative ease and speed at all seasons, a large part of 

 every succeeding year, during which these studies are continued, will 

 be devoted to field study. 



Further assurance of the publication of the awaited volume on the 

 Liassic flora of the Mixteca Alta has been given by Seiior Aguilera, 

 Director of the Mexican Geological Survey, and it is trusted that this 

 well-illustrated work may soon appear. 



The supplementary volume to Carnegie Institution Publication No. 

 34 has taken longer to bring into final form than was at first antici- 

 pated, owing to the difficulty of placing artificially defined species in 



