Publications of the Uftiversity oj Pennsylvania. vii 



3. Descriptions of Three New Polychaeta from th« New Jersey 

 Coast. By J. Percy Moore. (Plates IIMV.) 



* Volume I— No. s. 



On the Embryos of Bats. By Harrison Allen. (Plates V-VIII.) 

 J2.00. 



Volume II. 



Syllabus of Lectures on the Vertebrata. By Edward D. Cope, 

 with an Introduction by Henry Fairfield Osborn. Paper, ^i.oo; cloth, 

 $1.25. 



* Volume III. 



Some Collected Scientific Papers of the late John A. Ryder, 



Volume IV. 



(For the year 1897.) 

 Eight Separata. 



Volume V. 



(For the year 1898.) 

 Sixteen Separata. 



Volume VI. 



(For the year 1899.) 

 Comparative Cytological Studies. By Thos. H. Montgomery, Jr. 



Volume VII. 



(For the year 1900.) 

 Nineteen Separata. 



Note. — Publication of the " Contributions from the Zoological Laboratory" in serial 

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 the form of reprints are bound in annual collections FOR EXCHANGE PURPOSES ONLY 

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Orders for Vol. 1, No. i, and Vol. II, may be placed with GINN & COMPANY. 

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 College Hall, University of Pennsylvania. 



Astronomy 



Volume I. 



I. Description and Determination of the Longitude of the Flower 

 Astronomical Observatory. (/« press.) By Charles L. Doo- 



LITTLK. 



3. Results of Observations with the Zenith Telescope, from 

 October i, 1896, to August 16, i898. By Charles L. Doolittle, 

 ^1.50. 



♦ Out of print. 



