SKETCH OF SAM UEL L CK W OD. 69 7 



ing liim to write a popular descriptive text to it. While his mind 

 was exercised on this subject he was attacked by a violent fever, 

 culminating in delirium. In this delirium he dreamed of a ter- 

 rific battle of saurians, in which all the giants of the family took 

 part. After recovery from his illness Mr. Lockwood wrote the 

 dream down, and it proved a very satisfactory libretto to the 

 cartoon. 



While Mr. Hawkins was still engaged in his saurian recon- 

 struction in Central Park, the " Tweed Ring " rose into power, and, 

 not appreciating the value of this scientific labor, or rather not 

 caring for it unless it was re-enforced by the kind of considera- 

 tion acceptable to political bosses, ordered the figures, represent- 

 ing the patient labors of two or three years, destroyed. Prof. 

 Henry, of the Smithsonian Institution, intervened to prevent this 

 devastation, but he had no hearing. 



Mr. Lockwood's residence at Keyport gave him opportunity to 

 study icnthyic life. As a first result of his researches in this new 

 field appeared his article in the American Naturalist, The Sea 

 Horse and its Young, which describes the remarkable fact that 

 the male fish takes from the female the eggs and places them in 

 an abdominal pouch, in which he carries them until they are 

 hatched. It was upon this discovery, published in 1867, that the 

 University of New York conferred upon her alumnus the degree 

 of Ph. D. Some studies on insects at this time led to economic 

 results. 



After reading a paper before the New York Lyceum of Natu- 

 ral History on A New Parasite in the Eel, the society requested 

 the doctor to take up the study of Limulus, the horsefoot or 

 king crab. Dr. Lockwood was promised the loan of a compound 

 microscope for the purpose, but this he did not get, and did his 

 work with an instrument which cost but three dollars. The 

 paper was read to the society in 1869, and published in the Amer- 

 ican Naturalist in 1870. It showed that in one of its embryonic 

 forms Limulus is a trilobite. Dr. Lockwood also demonstrated 

 that in successive months of its larval life it went through fur- 

 ther phases representing those higher fossil forms known as 

 Pterygotiis. The author furnished eggs to Prof. A. Packard, who 

 sent some to Jena. The article in the American Naturalist at- 

 tracted much attention, and pointed out the way to a number of 

 eminent workers on the problem who were able to use the best 

 appliances. Dr. Packard led ; then Prof. Dorhn, the biologist of 

 the University of Jena, who translated the Lockwood article into 

 German. Dr. Richard Owen, the eminent English anatomist, 

 occupied two evenings of the Linnean Society of London citing 

 largely from the article and complimenting it. The paper re- 

 ceived praise also from Milne-Edwards. 



