The development of the concept of electric charge: by Duane Roller and Duane H. D. Roller. Harvard Case Histories in Experimental Science, No. 8. 97 pages, 15 × 23 cm. Cambridge, Harvard University Press, 1954. Price, $1.60.

Pasteur's and Tyndall's studies of spont

Pasteur's and Tyndall's studies of spontaneous generation: edited by James Bryant Conant. Harvard Case Histories in Experimental Science, No. 7. 61 pages, 15 × 23 cm. Cambridge, Harvard University Press, 1953. Price, $1.25 (paper)

✍ T.C. 📂 Article 📅 1954 🏛 Elsevier Science 🌐 English ⚖ 85 KB

BOOK REVIEWS ## 335 dicated and possible avenues for further theoretical development given. Mr. Wilson's prose style is always clear and lucid but the vast mass of necessary mathematical detail demand the close attention of the reader. The results are well worth the effort. In this age of increa