AUTHORS’ ABSTRACT OF THIS PAPER ISSUED BY 
THE BIBLIOGRAPHIC SERVICE, FEBRUARY 16 
THE INFLUENCE OF EXCESSIVE SEXUAL ACTIVITY 
OF MALE RABBITS 
1. ON THE PROPERTIES OF THE SEMINAL DISCHARGE 
ORREN LLOYD-JONES AND F. A. HAYS 
Iowa State College 
CONTENTS 
EATEN ROK HOTA Sata ats aint gee ae mic or AIS COE eee EE eens Petibint.c oondo nanan 463 
Generalaplanvof @xperiment,, csc vs ois aeae ee hoe ind ees eee aes elses 464 
VE COMETyg Ole SC IMG M te ere ai. Nos MS cncrk ena ooo ess neers ae ghee yete ca ee Pouce cera 466 
BY OTe ON NIE en a ao Sita bie cio eta aS ERR ISI Seo He Dieticians Bsitiao Ga ane aioM 468 
Nolumeromsemen mecovieredia..<scee. a2 no a o2 sae tne oe sam clos aa eee eens 468 
Chaneessmeseneral sy properties! .q cp 45s s/s: +. eel ad yee tn oe totem cea. 472 
Number of sperm per unit volume......... Ere err mee Cite. 6 0 SAD 473 
VAG tal tyes cns are sae Sees ane baie, not he Meg els 2 Shosae co apse -n,a Ge eta) Baayen ote ROE Sole ony 477 
EVAECRO Tal OLLOMM ee ees sere eteaeer ser shoo sake ei acts eis: sLaiaie ean ota nee MENS Re P Se ee 480 
WD ATOM O test OLVOM acho. Aone aie chess orang teh ave 2.200) Sado abarane ooh cies cheer cpeneyerne see ere cit 484 
Cer uaUty OF, DRC OMAN CN eye tas ern ee vd oe shea cerns Deis ee ICL Orie 492 
Size woth tere seit Wee aa bet ontce eae bcd eile cit os Hae RET RR I eee Ae ie 493 
INTRODUCTION 
During the past two years the animal breeding laboratory of 
the department of Animal Husbandry of Iowa State College 
has carried on work aimed to throw some light on the effects 
of excessive sexual activity of the male (1st) on the properties 
of the seminal discharge and also (2d) on the nature of the re- 
sulting offspring. This paper is a report of the first-mentioned 
line of work. A report by one of us on the nature of the off- 
spring appears in the same number of this Journal (Hays, F. A. 
The influence of excessive sexual activity of male rabbits: II. 
On the nature of their offspring.) The attributes of the semen 
and its spermatic content, as influenced by heavy sexual service, 
which are here reported on are as follows: 
463 
