MUSEUM OF COMPAKATIVE ZOOLOGY. 13 



of these was an elementary course given in Cambridge, the imme- 

 diate supervision of which in the laboratory and in the field was 

 placed in the hands of Dr. G. E. Ladd, of the Geological Survey of 

 Georgia, formerly an instructor in this Department. The second 

 school was given for five weeks in the field, the time being devoted 

 to an examination of the general geology of Southern New England. 

 A detailed itinerary of the route taken has been published in the 

 announcements of the Summer Schools for the year 1897. On 

 these journeys materials were collected for the teaching collection 

 of the Laboratory. 



Specimens of fulgurite from the sand beach of Lighthouse Point, 

 Marquette, Mich., were presented by Mr. H. W. Kidder. 



Dr. R. T. Jackson reports that the collections used in teaching 

 Palaeontology are in good condition. Considerable additions have 

 been made to the series of enlarged photographic diagrams, of 

 which there are now eighty-five. Some excellent specimens of 

 Cambrian Trilobites from British Columbia were received from 

 Mr. F. N. Balch, of the Graduate School. A fine crinoid stem 

 from the Chemung of Pennsylvania was received from Mr. C. O. 

 Macfarlane, Superintendent, Long Valley Coal Co., Towanda, Pa. 

 A number of desirable specimens were received from Mr. J. B. 

 Woodworth, for all of which the Department records its thanks. 



A good representation of the plants of the Dakota Group of 

 Kansas was purchased of Mr. C. H. Sternberg, of Lawrence, 

 Kansas. A number of fossils selected to fill gaps in the collection 

 were purchased of Prof. H. A. Ward, of Rochester. 



The collection of Invertebrate Fossils is now a very good one, 

 embracing representative genera of all the groups which are pre- 

 served in the geological record. It includes many microscopic 

 slides and other preparations to elucidate structural detail. The 

 collection which illustrates Historical Geology is also satisfactory. 

 While there is need of additional material in many groups, there 

 is a considerable representation of fossils from every important 

 geological horizon from the Lower Cambrian to the Quaternary. 



Dr. Jackson spent considerable time in working on the Palseon- 

 tological Collections of the Museum. 



Mr. T. A. Jaggar, Jr. reports as follows concerning the advanced 

 courses in geological field and laboratory work. 



